diff --git a/en/application-dev/reference/apis/js-apis-request.md b/en/application-dev/reference/apis/js-apis-request.md
index 45f0882a2cf0c151f04528c9e45271bf22ea1656..65e8c2708c98748ba55a734e8095228233d90b9a 100644
--- a/en/application-dev/reference/apis/js-apis-request.md
+++ b/en/application-dev/reference/apis/js-apis-request.md
@@ -3,6 +3,7 @@
 The **request** module provides applications with basic upload, download, and background transmission agent capabilities.
 
 > **NOTE**
+> 
 > The initial APIs of this module are supported since API version 6. Newly added APIs will be marked with a superscript to indicate their earliest API version.
 
 
@@ -31,8 +32,9 @@ var config = {
 }
 ```
 
-The **cleartextTraffic** attribute is not involved during the development of applications in the stage model.
+The **cleartextTraffic** attribute is not involved during application development in the stage model.
 
+The download server must support the HTTP HEAD method so that the size of the data to download can be obtained through **content-length**. Otherwise, the download task fails. If this is the case, you can check the failure cause through [on('fail')<sup>7+</sup>)](#onfail7).
 
 
 ## Constants
@@ -53,6 +55,8 @@ The **cleartextTraffic** attribute is not involved during the development of app
 | ERROR_INSUFFICIENT_SPACE<sup>7+</sup> | number | Yes| No| Insufficient storage space.|
 | ERROR_TOO_MANY_REDIRECTS<sup>7+</sup> | number | Yes| No| Error caused by too many network redirections.|
 | ERROR_UNHANDLED_HTTP_CODE<sup>7+</sup> | number | Yes| No| Unidentified HTTP code.|
+| ERROR_OFFLINE<sup>9+</sup> | number | Yes| No| No network connection.|
+| ERROR_UNSUPPORTED_NETWORK_TYPE<sup>9+</sup> | number | Yes| No| Network type mismatch.|
 | ERROR_UNKNOWN<sup>7+</sup> | number | Yes| No| Unknown error.|
 | PAUSED_QUEUED_FOR_WIFI<sup>7+</sup> | number | Yes| No| Download paused and queuing for a WLAN connection, because the file size exceeds the maximum value allowed by a mobile network session.|
 | PAUSED_UNKNOWN<sup>7+</sup> | number | Yes| No| Download paused due to unknown reasons.|
@@ -73,24 +77,26 @@ Uploads files. This API uses a promise to return the result.
 
 This API can be used only in the FA model.
 
+>  **NOTE**<br>This API is deprecated since API version 9. You are advised to use [request.uploadFile<sup>9+</sup>](#requestuploadfile9).
+
 **Required permissions**: ohos.permission.INTERNET
 
 **System capability**: SystemCapability.MiscServices.Upload
 
 **Parameters**
 
-| Name| Type| Mandatory| Description|
-| -------- | -------- | -------- | -------- |
-| config | [UploadConfig](#uploadconfig) | Yes| Upload configurations.|
+  | Name| Type| Mandatory| Description|
+  | -------- | -------- | -------- | -------- |
+  | config | [UploadConfig](#uploadconfig) | Yes| Upload configurations.|
 
 **Return value**
 
-| Type| Description|
-| -------- | -------- |
-| Promise&lt;[UploadTask](#uploadtask)&gt; | Promise used to return the **UploadTask** object.|
+  | Type| Description|
+  | -------- | -------- |
+  | Promise&lt;[UploadTask](#uploadtask)&gt; | Promise used to return the **UploadTask** object.|
 
 **Example**
-
+  
   ```js
   let uploadTask;
   let uploadConfig = {
@@ -116,19 +122,23 @@ Uploads files. This API uses an asynchronous callback to return the result.
 
 This API can be used only in the FA model.
 
+> **NOTE**
+> 
+> This API is deprecated since API version 9. You are advised to use [request.uploadFile<sup>9+</sup>](#requestuploadfile9-1).
+
 **Required permissions**: ohos.permission.INTERNET
 
 **System capability**: SystemCapability.MiscServices.Upload
 
 **Parameters**
 
-| Name| Type| Mandatory| Description|
-| -------- | -------- | -------- | -------- |
-| config | [UploadConfig](#uploadconfig) | Yes| Upload configurations.|
-| callback | AsyncCallback&lt;[UploadTask](#uploadtask)&gt; | No| Callback used to return the **UploadTask** object.|
+  | Name| Type| Mandatory| Description|
+  | -------- | -------- | -------- | -------- |
+  | config | [UploadConfig](#uploadconfig) | Yes| Upload configurations.|
+  | callback | AsyncCallback&lt;[UploadTask](#uploadtask)&gt; | Yes| Callback used to return the **UploadTask** object.|
 
 **Example**
-
+  
   ```js
   let uploadTask;
   let uploadConfig = {
@@ -152,6 +162,96 @@ upload(context: BaseContext, config: UploadConfig): Promise&lt;UploadTask&gt;
 
 Uploads files. This API uses a promise to return the result.
 
+> **NOTE**
+> 
+> This API is deprecated since API version 9. You are advised to use [request.uploadFile<sup>9+</sup>](#requestuploadfile9).
+
+**Required permissions**: ohos.permission.INTERNET
+
+**System capability**: SystemCapability.MiscServices.Upload
+
+**Parameters**
+
+  | Name| Type| Mandatory| Description|
+  | -------- | -------- | -------- | -------- |
+  | context | BaseContext | Yes| Application-based context.|
+  | config | [UploadConfig](#uploadconfig) | Yes| Upload configurations.|
+  
+
+**Return value**
+
+  | Type| Description|
+  | -------- | -------- |
+  | Promise&lt;[UploadTask](#uploadtask)&gt; | Promise used to return the **UploadTask** object.|
+
+**Example**
+  
+  ```js
+  let uploadTask;
+  let uploadConfig = {
+    url: 'https://patch',
+    header: { key1: "value1", key2: "value2" },
+    method: "POST",
+    files: [{ filename: "test", name: "test", uri: "internal://cache/test.jpg", type: "jpg" }],
+    data: [{ name: "name123", value: "123" }],
+  };
+  request.upload(globalThis.abilityContext, uploadConfig).then((data) => {
+      uploadTask = data;
+  }).catch((err) => {
+      console.error('Failed to request the upload. Cause: ' + JSON.stringify(err));
+  });
+  ```
+
+
+## request.upload<sup>9+</sup>
+
+upload(context: BaseContext, config: UploadConfig, callback: AsyncCallback&lt;UploadTask&gt;): void
+
+Uploads files. This API uses an asynchronous callback to return the result.
+
+> **NOTE**
+> 
+> This API is deprecated since API version 9. You are advised to use [request.uploadFile<sup>9+</sup>](#requestuploadfile9-1).
+
+**Required permissions**: ohos.permission.INTERNET
+
+**System capability**: SystemCapability.MiscServices.Upload
+
+**Parameters**
+
+  | Name| Type| Mandatory| Description|
+  | -------- | -------- | -------- | -------- |
+  | context | BaseContext | Yes| Application-based context.|
+  | config | [UploadConfig](#uploadconfig) | Yes| Upload configurations.|
+  | callback | AsyncCallback&lt;[UploadTask](#uploadtask)&gt; | Yes| Callback used to return the **UploadTask** object.|
+
+**Example**
+  
+  ```js
+  let uploadTask;
+  let uploadConfig = {
+    url: 'https://patch',
+    header: { key1: "value1", key2: "value2" },
+    method: "POST",
+    files: [{ filename: "test", name: "test", uri: "internal://cache/test.jpg", type: "jpg" }],
+    data: [{ name: "name123", value: "123" }],
+  };
+  request.upload(globalThis.abilityContext, uploadConfig, (err, data) => {
+      if (err) {
+          console.error('Failed to request the upload. Cause: ' + JSON.stringify(err));
+          return;
+      }
+      uploadTask = data;
+  });
+  ```
+
+
+## request.uploadFile<sup>9+</sup>
+
+uploadFile(context: BaseContext, config: UploadConfig): Promise&lt;UploadTask&gt;
+
+Uploads files. This API uses a promise to return the result.
+
 **Required permissions**: ohos.permission.INTERNET
 
 **System capability**: SystemCapability.MiscServices.Upload
@@ -159,7 +259,7 @@ Uploads files. This API uses a promise to return the result.
 **Parameters**
 
 | Name| Type| Mandatory| Description|
-| -------- | -------- | -------- | -------- |
+  | -------- | -------- | -------- | -------- |
 | context | BaseContext | Yes| Application-based context.|
 | config | [UploadConfig](#uploadconfig) | Yes| Upload configurations.|
 
@@ -167,9 +267,16 @@ Uploads files. This API uses a promise to return the result.
 **Return value**
 
 | Type| Description|
-| -------- | -------- |
+  | -------- | -------- |
 | Promise&lt;[UploadTask](#uploadtask)&gt; | Promise used to return the **UploadTask** object.|
 
+**Error codes**
+For details about the error codes, see [Upload and Download Error Codes](../errorcodes/errorcode-request.md).
+
+| ID| Error Message|
+| -------- | -------- |
+| 13400002 | Bad file path. |
+
 **Example**
 
   ```js
@@ -178,10 +285,10 @@ Uploads files. This API uses a promise to return the result.
     url: 'https://patch',
     header: { key1: "value1", key2: "value2" },
     method: "POST",
-    files: { filename: "test", name: "test", uri: "internal://cache/test.jpg", type: "jpg" },
-    data: { name: "name123", value: "123" },
+    files: [{ filename: "test", name: "test", uri: "internal://cache/test.jpg", type: "jpg" }],
+    data: [{ name: "name123", value: "123" }],
   };
-  request.upload(globalThis.abilityContext, uploadConfig).then((data) => {
+  request.uploadFile(globalThis.abilityContext, uploadConfig).then((data) => {
       uploadTask = data;
   }).catch((err) => {
       console.error('Failed to request the upload. Cause: ' + JSON.stringify(err));
@@ -189,9 +296,9 @@ Uploads files. This API uses a promise to return the result.
   ```
 
 
-## request.upload<sup>9+</sup>
+## request.uploadFile<sup>9+</sup>
 
-upload(context: BaseContext, config: UploadConfig, callback: AsyncCallback&lt;UploadTask&gt;): void
+uploadFile(context: BaseContext, config: UploadConfig, callback: AsyncCallback&lt;UploadTask&gt;): void
 
 Uploads files. This API uses an asynchronous callback to return the result.
 
@@ -202,10 +309,17 @@ Uploads files. This API uses an asynchronous callback to return the result.
 **Parameters**
 
 | Name| Type| Mandatory| Description|
-| -------- | -------- | -------- | -------- |
+  | -------- | -------- | -------- | -------- |
 | context | BaseContext | Yes| Application-based context.|
 | config | [UploadConfig](#uploadconfig) | Yes| Upload configurations.|
-| callback | AsyncCallback&lt;[UploadTask](#uploadtask)&gt; | No| Callback used to return the **UploadTask** object.|
+| callback | AsyncCallback&lt;[UploadTask](#uploadtask)&gt; | Yes| Callback used to return the **UploadTask** object.|
+
+**Error codes**
+For details about the error codes, see [Upload and Download Error Codes](../errorcodes/errorcode-request.md).
+
+| ID| Error Message|
+| -------- | -------- |
+| 13400002 | Bad file path. |
 
 **Example**
 
@@ -218,7 +332,7 @@ Uploads files. This API uses an asynchronous callback to return the result.
     files: [{ filename: "test", name: "test", uri: "internal://cache/test.jpg", type: "jpg" }],
     data: [{ name: "name123", value: "123" }],
   };
-  request.upload(globalThis.abilityContext, uploadConfig, (err, data) => {
+  request.uploadFile(globalThis.abilityContext, uploadConfig, (err, data) => {
       if (err) {
           console.error('Failed to request the upload. Cause: ' + JSON.stringify(err));
           return;
@@ -227,6 +341,7 @@ Uploads files. This API uses an asynchronous callback to return the result.
   });
   ```
 
+
 ## UploadTask
 
 Implements file uploads. Before using any APIs of this class, you must obtain an **UploadTask** object.
@@ -244,12 +359,12 @@ Subscribes to an upload event. This API uses an asynchronous callback to return
 
 **Parameters**
 
-| Name| Type| Mandatory| Description|
-| -------- | -------- | -------- | -------- |
-| type | string | Yes| Type of the event to subscribe to. The value is **'progress'** (upload progress).|
-| callback | function | Yes| Callback for the upload progress event.|
+  | Name| Type| Mandatory| Description|
+  | -------- | -------- | -------- | -------- |
+  | type | string | Yes| Type of the event to subscribe to. The value is **'progress'** (upload progress).|
+  | callback | function | Yes| Callback for the upload progress event.|
 
-Parameters of the callback function
+  Parameters of the callback function
 
 | Name| Type| Mandatory| Description|
 | -------- | -------- | -------- | -------- |
@@ -257,8 +372,9 @@ Parameters of the callback function
 | totalSize | number | Yes| Total size of the files to upload, in KB.|
 
 **Example**
-
+  
   ```js
+  let uploadTask;
   uploadTask.on('progress', function callback(uploadedSize, totalSize) {
       console.info("upload totalSize:" + totalSize + "  uploadedSize:" + uploadedSize);
   }
@@ -278,20 +394,21 @@ Subscribes to an upload event. This API uses an asynchronous callback to return
 
 **Parameters**
 
-| Name| Type| Mandatory| Description|
-| -------- | -------- | -------- | -------- |
-| type | string | Yes| Type of the event to subscribe to. The value is **'headerReceive'** (response header).|
-| callback | function | Yes| Callback for the HTTP Response Header event.|
+  | Name| Type| Mandatory| Description|
+  | -------- | -------- | -------- | -------- |
+  | type | string | Yes| Type of the event to subscribe to. The value is **'headerReceive'** (response header).|
+  | callback | function | Yes| Callback for the HTTP Response Header event.|
 
-Parameters of the callback function
+  Parameters of the callback function
 
 | Name| Type| Mandatory| Description|
 | -------- | -------- | -------- | -------- |
 | header | object | Yes| HTTP Response Header.|
 
 **Example**
-
+  
   ```js
+  let uploadTask;
   uploadTask.on('headerReceive', function callback(headers){   
       console.info("upOnHeader headers:" + JSON.stringify(headers));
   }
@@ -311,20 +428,21 @@ Subscribes to an upload event. This API uses an asynchronous callback to return
 
 **Parameters**
 
-| Name| Type| Mandatory| Description|
-| -------- | -------- | -------- | -------- |
-| type | string | Yes| Type of the event to subscribe to. The value **'complete'** means the upload completion event, and **'fail'** means the upload failure event.|
-| callback | function | Yes| Callback used to return the result.|
+  | Name| Type| Mandatory| Description|
+  | -------- | -------- | -------- | -------- |
+  | type | string | Yes| Type of the event to subscribe to. The value **'complete'** means the upload completion event, and **'fail'** means the upload failure event.|
+  | callback | Callback&lt;Array&lt;TaskState&gt;&gt; | Yes| Callback used to return the result.|
 
-Parameters of the callback function
+  Parameters of the callback function
 
 | Name| Type| Mandatory| Description|
 | -------- | -------- | -------- | -------- |
 | taskstates | Array&lt;[TaskState](#taskstate9)&gt; | Yes| Upload result.|
 
 **Example**
-
+  
   ```js
+  let uploadTask;
   uploadTask.on('complete', function callback(taskStates) {
     for (let i = 0; i < taskStates.length; i++ ) {
       console.info("upOnComplete taskState:" + JSON.stringify(taskStates[i]));
@@ -353,12 +471,12 @@ Unsubscribes from an upload event. This API uses an asynchronous callback to ret
 
 **Parameters**
 
-| Name| Type| Mandatory| Description|
-| -------- | -------- | -------- | -------- |
-| type | string | Yes| Type of the event to unsubscribe from. The value is **'progress'** (upload progress).|
-| callback | function | No| Callback for the upload progress event.|
+  | Name| Type| Mandatory| Description|
+  | -------- | -------- | -------- | -------- |
+  | type | string | Yes| Type of the event to unsubscribe from. The value is **'progress'** (upload progress).|
+  | callback | function | No| Callback for the upload progress event.|
 
-Parameters of the callback function
+  Parameters of the callback function
 
 | Name| Type| Mandatory| Description|
 | -------- | -------- | -------- | -------- |
@@ -366,8 +484,9 @@ Parameters of the callback function
 | totalSize | number | Yes| Total size of the files to upload, in KB.|
 
 **Example**
-
+  
   ```js
+  let uploadTask;
   uploadTask.off('progress', function callback(uploadedSize, totalSize) {
       console.info('uploadedSize: ' + uploadedSize, 'totalSize: ' + totalSize);
   }
@@ -387,20 +506,21 @@ Unsubscribes from an upload event. This API uses an asynchronous callback to ret
 
 **Parameters**
 
-| Name| Type| Mandatory| Description|
-| -------- | -------- | -------- | -------- |
-| type | string | Yes| Type of the event to unsubscribe from. The value is **'headerReceive'** (response header).|
-| callback | function | No| Callback for the HTTP Response Header event.|
+  | Name| Type| Mandatory| Description|
+  | -------- | -------- | -------- | -------- |
+  | type | string | Yes| Type of the event to unsubscribe from. The value is **'headerReceive'** (response header).|
+  | callback | function | No| Callback for the HTTP Response Header event.|
 
-Parameters of the callback function
+  Parameters of the callback function
 
 | Name| Type| Mandatory| Description|
 | -------- | -------- | -------- | -------- |
 | header | object | Yes| HTTP Response Header.|
 
 **Example**
-
+  
   ```js
+  let uploadTask;
   uploadTask.off('headerReceive', function callback(headers) {
       console.info("upOnHeader headers:" + JSON.stringify(headers));
   }
@@ -419,20 +539,21 @@ Unsubscribes from an upload event. This API uses an asynchronous callback to ret
 
 **Parameters**
 
-| Name| Type| Mandatory| Description|
-| -------- | -------- | -------- | -------- |
-| type | string | Yes| Type of the event to subscribe to. The value **'complete'** means the upload completion event, and **'fail'** means the upload failure event.|
-| callback | function | No| Callback used to return the result.|
+  | Name| Type| Mandatory| Description|
+  | -------- | -------- | -------- | -------- |
+  | type | string | Yes| Type of the event to subscribe to. The value **'complete'** means the upload completion event, and **'fail'** means the upload failure event.|
+  | callback | Callback&lt;Array&lt;TaskState&gt;&gt; | No| Callback used to return the result.|
 
-Parameters of the callback function
+  Parameters of the callback function
 
 | Name| Type| Mandatory| Description|
 | -------- | -------- | -------- | -------- |
 | taskstates | Array&lt;[TaskState](#taskstate9)&gt; | Yes| Upload result.|
 
 **Example**
-
+  
   ```js
+  let uploadTask;
   uploadTask.off('complete', function callback(taskStates) {
     for (let i = 0; i < taskStates.length; i++ ) {
       console.info("upOnComplete taskState:" + JSON.stringify(taskStates[i]));
@@ -455,19 +576,24 @@ remove(): Promise&lt;boolean&gt;
 
 Removes this upload task. This API uses a promise to return the result. 
 
+> **NOTE**
+> 
+> This API is deprecated since API version 9. You are advised to use [delete<sup>9+</sup>](#delete9).
+
 **Required permissions**: ohos.permission.INTERNET
 
 **System capability**: SystemCapability.MiscServices.Upload
 
 **Return value**
 
-| Type| Description|
-| -------- | -------- |
-| Promise&lt;boolean&gt; | Promise used to return the task removal result. If **true** is returned, the task is removed. If **false** is returned, the task fails to be removed.|
+  | Type| Description|
+  | -------- | -------- |
+  | Promise&lt;boolean&gt; | Promise used to return the result. It returns **true** if the operation is successful and returns **false** otherwise.|
 
 **Example**
-
+  
   ```js
+  let uploadTask;
   uploadTask.remove().then((result) => {
       if (result) {
           console.info('Upload task removed successfully. ');
@@ -486,6 +612,76 @@ remove(callback: AsyncCallback&lt;boolean&gt;): void
 
 Removes this upload task. This API uses an asynchronous callback to return the result. 
 
+> **NOTE**
+> 
+> This API is deprecated since API version 9. You are advised to use [delete<sup>9+</sup>](#delete9-1).
+
+**Required permissions**: ohos.permission.INTERNET
+
+**System capability**: SystemCapability.MiscServices.Upload
+
+**Parameters**
+
+  | Name| Type| Mandatory| Description|
+  | -------- | -------- | -------- | -------- |
+  | callback | AsyncCallback&lt;boolean&gt; | Yes| Callback used to return the result.|
+
+**Example**
+  
+  ```js
+  let uploadTask;
+  uploadTask.remove((err, result) => {
+      if (err) {
+          console.error('Failed to remove the upload task. Cause: ' + JSON.stringify(err));
+          return;
+      }
+      if (result) {
+          console.info('Upload task removed successfully.');
+      } else {
+          console.error('Failed to remove the upload task.');
+      }
+  });
+  ```
+
+
+### delete<sup>9+</sup>
+
+delete(): Promise&lt;boolean&gt;
+
+Deletes this upload task. This API uses a promise to return the result. 
+
+**Required permissions**: ohos.permission.INTERNET
+
+**System capability**: SystemCapability.MiscServices.Upload
+
+**Return value**
+
+| Type| Description|
+  | -------- | -------- |
+| Promise&lt;boolean&gt; | Promise used to return the task deletion result. It returns **true** if the operation is successful and returns **false** otherwise.|
+
+**Example**
+
+  ```js
+  let uploadTask;
+  uploadTask.delete().then((result) => {
+      if (result) {
+          console.info('Upload task removed successfully. ');
+      } else {
+          console.error('Failed to remove the upload task. ');
+      }
+  }).catch((err) => {
+      console.error('Failed to remove the upload task. Cause: ' + JSON.stringify(err));
+  });
+  ```
+
+
+### delete<sup>9+</sup>
+
+delete(callback: AsyncCallback&lt;boolean&gt;): void
+
+Deletes this upload task. This API uses an asynchronous callback to return the result. 
+
 **Required permissions**: ohos.permission.INTERNET
 
 **System capability**: SystemCapability.MiscServices.Upload
@@ -493,13 +689,14 @@ Removes this upload task. This API uses an asynchronous callback to return the r
 **Parameters**
 
 | Name| Type| Mandatory| Description|
-| -------- | -------- | -------- | -------- |
+  | -------- | -------- | -------- | -------- |
 | callback | AsyncCallback&lt;boolean&gt; | Yes| Callback used to return the result.|
 
 **Example**
 
   ```js
-  uploadTask.remove((err, result) => {
+  let uploadTask;
+  uploadTask.delete((err, result) => {
       if (err) {
           console.error('Failed to remove the upload task. Cause: ' + JSON.stringify(err));
           return;
@@ -522,7 +719,7 @@ Removes this upload task. This API uses an asynchronous callback to return the r
 | Name| Type| Mandatory| Description|
 | -------- | -------- | -------- | -------- |
 | url | string | Yes| Resource URL.|
-| header | object | Yes| HTTP or HTTPS header added to an upload request.|
+| header | Object | Yes| HTTP or HTTPS header added to an upload request.|
 | method | string | Yes| Request method, which can be **'POST'** or **'PUT'**. The default value is **'POST'**.|
 | files | Array&lt;[File](#file)&gt; | Yes| List of files to upload, which is submitted through **multipart/form-data**.|
 | data | Array&lt;[RequestData](#requestdata)&gt; | Yes| Form data in the request body.|
@@ -547,10 +744,10 @@ Removes this upload task. This API uses an asynchronous callback to return the r
 
 | Name| Type| Mandatory| Description|
 | -------- | -------- | -------- | -------- |
-| filename | string | No| File name in the header when **multipart** is used.|
-| name | string | No| Name of a form item when **multipart** is used. The default value is **file**.|
-| uri | string | Yes| Local path for storing files.<br>The **dataability** and **internal** protocol types are supported. However, the **internal** protocol type supports only temporary directories. Below are examples:<br>dataability:///com.domainname.dataability.persondata/person/10/file.txt<br><br>internal://cache/path/to/file.txt |
-| type | string | No| Type of the file content. By default, the type is obtained based on the extension of the file name or URI.|
+| filename | string | Yes| File name in the header when **multipart** is used.|
+| name | string | Yes| Name of a form item when **multipart** is used. The default value is **file**.|
+| uri | string | Yes| Local path for storing files.<br>The **dataability** and **internal** protocol types are supported. However, the **internal** protocol type supports only temporary directories. Below are examples:<br>dataability:///com.domainname.dataability.persondata/person/10/file.txt<br>internal://cache/path/to/file.txt |
+| type | string | Yes| Type of the file content. By default, the type is obtained based on the extension of the file name or URI.|
 
 
 ## RequestData
@@ -571,6 +768,10 @@ download(config: DownloadConfig): Promise&lt;DownloadTask&gt;
 
 Downloads files. This API uses a promise to return the result.
 
+> **NOTE**
+> 
+> This API is deprecated since API version 9. You are advised to use [request.downloadFile<sup>9+</sup>](#requestdownloadfile9).
+
 This API can be used only in the FA model.
 
 **Required permissions**: ohos.permission.INTERNET
@@ -579,18 +780,18 @@ This API can be used only in the FA model.
 
 **Parameters**
 
-| Name| Type| Mandatory| Description|
-| -------- | -------- | -------- | -------- |
-| config | [DownloadConfig](#downloadconfig) | Yes| Download configurations.|
+  | Name| Type| Mandatory| Description|
+  | -------- | -------- | -------- | -------- |
+  | config | [DownloadConfig](#downloadconfig) | Yes| Download configurations.|
 
 **Return value**
 
-| Type| Description|
-| -------- | -------- |
-| Promise&lt;[DownloadTask](#downloadtask)&gt; | Promise used to return the result.|
+  | Type| Description|
+  | -------- | -------- |
+  | Promise&lt;[DownloadTask](#downloadtask)&gt; | Promise used to return the result.|
 
 **Example**
-
+  
   ```js
   let downloadTask;
   request.download({ url: 'https://xxxx/xxxx.hap' }).then((data) => {
@@ -607,6 +808,10 @@ download(config: DownloadConfig, callback: AsyncCallback&lt;DownloadTask&gt;): v
 
 Downloads files. This API uses an asynchronous callback to return the result.
 
+> **NOTE**
+> 
+> This API is deprecated since API version 9. You are advised to use [request.downloadFile<sup>9+</sup>](#requestdownloadfile9-1).
+
 This API can be used only in the FA model.
 
 **Required permissions**: ohos.permission.INTERNET
@@ -615,13 +820,13 @@ This API can be used only in the FA model.
 
 **Parameters**
 
-| Name| Type| Mandatory| Description|
-| -------- | -------- | -------- | -------- |
-| config | [DownloadConfig](#downloadconfig) | Yes| Download configurations.|
-| callback | AsyncCallback&lt;[DownloadTask](#downloadtask)&gt; | No| Callback used to return the result.|
+  | Name| Type| Mandatory| Description|
+  | -------- | -------- | -------- | -------- |
+  | config | [DownloadConfig](#downloadconfig) | Yes| Download configurations.|
+  | callback | AsyncCallback&lt;[DownloadTask](#downloadtask)&gt; | Yes| Callback used to return the result.|
 
 **Example**
-
+  
   ```js
   let downloadTask;
   request.download({ url: 'https://xxxx/xxxxx.hap', 
@@ -640,25 +845,29 @@ download(context: BaseContext, config: DownloadConfig): Promise&lt;DownloadTask&
 
 Downloads files. This API uses a promise to return the result.
 
+> **NOTE**
+> 
+> This API is deprecated since API version 9. You are advised to use [request.downloadFile<sup>9+</sup>](#requestdownloadfile9).
+
 **Required permissions**: ohos.permission.INTERNET
 
 **System capability**: SystemCapability.MiscServices.Download
 
 **Parameters**
 
-| Name| Type| Mandatory| Description|
-| -------- | -------- | -------- | -------- |
-| context | BaseContext | Yes| Application-based context.|
-| config | [DownloadConfig](#downloadconfig) | Yes| Download configurations.|
+  | Name| Type| Mandatory| Description|
+  | -------- | -------- | -------- | -------- |
+  | context | BaseContext | Yes| Application-based context.|
+  | config | [DownloadConfig](#downloadconfig) | Yes| Download configurations.|
 
 **Return value**
 
-| Type| Description|
-| -------- | -------- |
-| Promise&lt;[DownloadTask](#downloadtask)&gt; | Promise used to return the result.|
+  | Type| Description|
+  | -------- | -------- |
+  | Promise&lt;[DownloadTask](#downloadtask)&gt; | Promise used to return the result.|
 
 **Example**
-
+  
   ```js
   let downloadTask;
   request.download(globalThis.abilityContext, { url: 'https://xxxx/xxxx.hap' }).then((data) => {
@@ -675,20 +884,24 @@ download(context: BaseContext, config: DownloadConfig, callback: AsyncCallback&l
 
 Downloads files. This API uses an asynchronous callback to return the result.
 
+> **NOTE**
+> 
+> This API is deprecated since API version 9. You are advised to use [request.downloadFile<sup>9+</sup>](#requestdownloadfile9-1).
+
 **Required permissions**: ohos.permission.INTERNET
 
 **System capability**: SystemCapability.MiscServices.Download
 
 **Parameters**
 
-| Name| Type| Mandatory| Description|
-| -------- | -------- | -------- | -------- |
-| context | BaseContext | Yes| Application-based context.|
-| config | [DownloadConfig](#downloadconfig) | Yes| Download configurations.|
-| callback | AsyncCallback&lt;[DownloadTask](#downloadtask)&gt; | No| Callback used to return the result.|
+  | Name| Type| Mandatory| Description|
+  | -------- | -------- | -------- | -------- |
+  | context | BaseContext | Yes| Application-based context.|
+  | config | [DownloadConfig](#downloadconfig) | Yes| Download configurations.|
+  | callback | AsyncCallback&lt;[DownloadTask](#downloadtask)&gt; | Yes| Callback used to return the result.|
 
 **Example**
-
+  
   ```js
   let downloadTask;
   request.download(globalThis.abilityContext, { url: 'https://xxxx/xxxxx.hap', 
@@ -700,16 +913,13 @@ Downloads files. This API uses an asynchronous callback to return the result.
       downloadTask = data;
   });
   ```
-## DownloadTask
-
-Implements file downloads.
 
 
-### on('progress')
+## request.downloadFile<sup>9+</sup>
 
-on(type: 'progress', callback:(receivedSize: number, totalSize: number) =&gt; void): void
+downloadFile(context: BaseContext, config: DownloadConfig): Promise&lt;DownloadTask&gt;
 
-Subscribes to a download event. This API uses an asynchronous callback to return the result.
+Downloads files. This API uses a promise to return the result.
 
 **Required permissions**: ohos.permission.INTERNET
 
@@ -718,24 +928,116 @@ Subscribes to a download event. This API uses an asynchronous callback to return
 **Parameters**
 
 | Name| Type| Mandatory| Description|
-| -------- | -------- | -------- | -------- |
-| type | string | Yes| Type of the event to subscribe to. The value is **'progress'** (download progress).|
-| callback | function | Yes| Callback for the download progress event.|
+  | -------- | -------- | -------- | -------- |
+| context | BaseContext | Yes| Application-based context.|
+| config | [DownloadConfig](#downloadconfig) | Yes| Download configurations.|
 
-Parameters of the callback function
+**Return value**
 
-| Name| Type| Mandatory| Description|
-| -------- | -------- | -------- | -------- |
-| receivedSize | number | Yes| Size of the downloaded files, in KB.|
-| totalSize | number | Yes| Total size of the files to download, in KB.|
+| Type| Description|
+  | -------- | -------- |
+| Promise&lt;[DownloadTask](#downloadtask)&gt; | Promise used to return the result.|
+
+**Error codes**
+For details about the error codes, see [Upload and Download Error Codes](../errorcodes/errorcode-request.md).
+
+| ID| Error Message|
+| -------- | -------- |
+| 13400001 | File operation error. |
+| 13400002 | Bad file path. |
+| 13400003 | Task manager service error. |
 
 **Example**
 
   ```js
-  downloadTask.on('progress', function download_callback(receivedSize, totalSize) {
-      console.info("download receivedSize:" + receivedSize + " totalSize:" + totalSize);
-  }
-  );
+  let downloadTask;
+  request.downloadFile(globalThis.abilityContext, { url: 'https://xxxx/xxxx.hap' }).then((data) => {
+      downloadTask = data;
+  }).catch((err) => {
+      console.error('Failed to request the download. Cause: ' + JSON.stringify(err));
+  })
+  ```
+
+
+## request.downloadFile<sup>9+</sup>
+
+downloadFile(context: BaseContext, config: DownloadConfig, callback: AsyncCallback&lt;DownloadTask&gt;): void;
+
+Downloads files. This API uses an asynchronous callback to return the result.
+
+**Required permissions**: ohos.permission.INTERNET
+
+**System capability**: SystemCapability.MiscServices.Download
+
+**Parameters**
+
+| Name| Type| Mandatory| Description|
+  | -------- | -------- | -------- | -------- |
+| context | BaseContext | Yes| Application-based context.|
+| config | [DownloadConfig](#downloadconfig) | Yes| Download configurations.|
+| callback | AsyncCallback&lt;[DownloadTask](#downloadtask)&gt; | Yes| Callback used to return the result.|
+
+**Error codes**
+For details about the error codes, see [Upload and Download Error Codes](../errorcodes/errorcode-request.md).
+
+| ID| Error Message|
+| -------- | -------- |
+| 13400001 | File operation error. |
+| 13400002 | Bad file path. |
+| 13400003 | Task manager service error. |
+
+**Example**
+
+  ```js
+  let downloadTask;
+  request.downloadFile(globalThis.abilityContext, { url: 'https://xxxx/xxxxx.hap', 
+  filePath: 'xxx/xxxxx.hap'}, (err, data) => {
+      if (err) {
+          console.error('Failed to request the download. Cause: ' + JSON.stringify(err));
+          return;
+      }
+      downloadTask = data;
+  });
+  ```
+
+
+## DownloadTask
+
+Implements file downloads.
+
+
+### on('progress')
+
+on(type: 'progress', callback:(receivedSize: number, totalSize: number) =&gt; void): void
+
+Subscribes to a download event. This API uses an asynchronous callback to return the result.
+
+**Required permissions**: ohos.permission.INTERNET
+
+**System capability**: SystemCapability.MiscServices.Download
+
+**Parameters**
+
+  | Name| Type| Mandatory| Description|
+  | -------- | -------- | -------- | -------- |
+  | type | string | Yes| Type of the event to subscribe to. The value is **'progress'** (download progress).|
+  | callback | function | Yes| Callback for the download progress event.|
+
+  Parameters of the callback function
+
+| Name| Type| Mandatory| Description|
+| -------- | -------- | -------- | -------- |
+| receivedSize | number | Yes| Size of the downloaded files, in KB.|
+| totalSize | number | Yes| Total size of the files to download, in KB.|
+
+**Example**
+  
+  ```js
+  let downloadTask;
+  downloadTask.on('progress', function download_callback(receivedSize, totalSize) {
+      console.info("download receivedSize:" + receivedSize + " totalSize:" + totalSize);
+  }
+  );
   ```
 
 
@@ -751,12 +1053,12 @@ Unsubscribes from a download event. This API uses an asynchronous callback to re
 
 **Parameters**
 
-| Name| Type| Mandatory| Description|
-| -------- | -------- | -------- | -------- |
-| type | string | Yes| Type of the event to unsubscribe from. The value is **'progress'** (download progress).|
-| callback | function | No| Callback for the download progress event.|
+  | Name| Type| Mandatory| Description|
+  | -------- | -------- | -------- | -------- |
+  | type | string | Yes| Type of the event to unsubscribe from. The value is **'progress'** (download progress).|
+  | callback | function | No| Callback for the download progress event.|
 
-Parameters of the callback function
+  Parameters of the callback function
 
 | Name| Type| Mandatory| Description|
 | -------- | -------- | -------- | -------- |
@@ -764,7 +1066,7 @@ Parameters of the callback function
 | totalSize | number | Yes| Total size of the files to download.|
 
 **Example**
-
+  
   ```js
   downloadTask .off('progress', function download_callback(receivedSize, totalSize) {
       console.info("download receivedSize:" + receivedSize + " totalSize:" + totalSize);
@@ -785,14 +1087,15 @@ Subscribes to a download event. This API uses an asynchronous callback to return
 
 **Parameters**
 
-| Name| Type| Mandatory| Description|
-| -------- | -------- | -------- | -------- |
-| type | string | Yes| Type of the event to subscribe to.<br>- **'complete'**: download task completion event.<br>- **'pause'**: download task pause event.<br>- **'remove'**: download task removal event.|
-| callback | function | Yes| Callback used to return the result.|
+  | Name| Type| Mandatory| Description|
+  | -------- | -------- | -------- | -------- |
+  | type | string | Yes| Type of the event to subscribe to.<br>- **'complete'**: download task completion event.<br>- **'pause'**: download task pause event.<br>- **'remove'**: download task removal event.|
+  | callback | function | Yes| Callback used to return the result.|
 
 **Example**
-
+  
   ```js
+  let downloadTask;
   downloadTask.on('complete', function callback() {
       console.info('Download task completed.');
   }
@@ -812,14 +1115,15 @@ Unsubscribes from a download event. This API uses an asynchronous callback to re
 
 **Parameters**
 
-| Name| Type| Mandatory| Description|
-| -------- | -------- | -------- | -------- |
-| type | string | Yes| Type of the event to unsubscribe from.<br>- **'complete'**: download task completion event.<br>- **'pause'**: download task pause event.<br>- **'remove'**: download task removal event.|
-| callback | function | No| Callback used to return the result.|
+  | Name| Type| Mandatory| Description|
+  | -------- | -------- | -------- | -------- |
+  | type | string | Yes| Type of the event to unsubscribe from.<br>- **'complete'**: download task completion event.<br>- **'pause'**: download task pause event.<br>- **'remove'**: download task removal event.|
+  | callback | function | No| Callback used to return the result.|
 
 **Example**
-
+  
   ```js
+  let downloadTask;
   downloadTask.off('complete', function callback() {
       console.info('Download task completed.');
   }
@@ -839,20 +1143,21 @@ Subscribes to the download task failure event. This API uses an asynchronous cal
 
 **Parameters**
 
-| Name| Type| Mandatory| Description|
-| -------- | -------- | -------- | -------- |
-| type | string | Yes| Type of the event to subscribe to. The value is **'fail'** (download failure).|
-| callback | function | Yes| Callback for the download task failure event.|
+  | Name| Type| Mandatory| Description|
+  | -------- | -------- | -------- | -------- |
+  | type | string | Yes| Type of the event to subscribe to. The value is **'fail'** (download failure).|
+  | callback | function | Yes| Callback for the download task failure event.|
 
-Parameters of the callback function
+  Parameters of the callback function
 
 | Name| Type| Mandatory| Description|
 | -------- | -------- | -------- | -------- |
 | err | number | Yes| Error code of the download failure. For details about the error codes, see [ERROR_*](#constants).|
 
 **Example**
-
+  
   ```js 
+  let downloadTask;
   downloadTask.on('fail', function callBack(err) {
       console.info('Download task failed. Cause:' + err);
   }
@@ -872,20 +1177,21 @@ Unsubscribes from the download task failure event. This API uses an asynchronous
 
 **Parameters**
 
-| Name| Type| Mandatory| Description|
-| -------- | -------- | -------- | -------- |
-| type | string | Yes| Type of the event to unsubscribe from. The value is **'fail'** (download failure).|
-| callback | function | No| Callback for the download task failure event.|
+  | Name| Type| Mandatory| Description|
+  | -------- | -------- | -------- | -------- |
+  | type | string | Yes| Type of the event to unsubscribe from. The value is **'fail'** (download failure).|
+  | callback | function | No| Callback for the download task failure event.|
 
-Parameters of the callback function
+  Parameters of the callback function
 
 | Name| Type| Mandatory| Description|
 | -------- | -------- | -------- | -------- |
 | err | number | Yes| Error code of the download failure. For details about the error codes, see [ERROR_*](#constants).|
 
 **Example**
-
+  
   ```js
+  let downloadTask;
   downloadTask.off('fail', function callBack(err) {
       console.info('Download task failed. Cause:' + err);
   } 
@@ -899,19 +1205,24 @@ remove(): Promise&lt;boolean&gt;
 
 Removes this download task. This API uses a promise to return the result.
 
+> **NOTE**
+> 
+> This API is deprecated since API version 9. You are advised to use [delete<sup>9+</sup>](#delete9-2).
+
 **Required permissions**: ohos.permission.INTERNET
 
 **System capability**: SystemCapability.MiscServices.Download
 
 **Return value**
 
-| Type| Description|
-| -------- | -------- |
-| Promise&lt;boolean&gt; | Promise used to return the task removal result.|
+  | Type| Description|
+  | -------- | -------- |
+  | Promise&lt;boolean&gt; | Promise used to return the task removal result.|
 
 **Example**
-
+  
   ```js
+  let downloadTask;
   downloadTask.remove().then((result) => {
       if (result) {
           console.info('Download task removed.');
@@ -930,19 +1241,24 @@ remove(callback: AsyncCallback&lt;boolean&gt;): void
 
 Removes this download task. This API uses an asynchronous callback to return the result.
 
+> **NOTE**
+> 
+> This API is deprecated since API version 9. You are advised to use [delete<sup>9+</sup>](#delete9-3).
+
 **Required permissions**: ohos.permission.INTERNET
 
 **System capability**: SystemCapability.MiscServices.Download
 
 **Parameters**
 
-| Name| Type| Mandatory| Description|
-| -------- | -------- | -------- | -------- |
-| callback | AsyncCallback&lt;boolean&gt; | Yes| Callback used to return the task removal result.|
+  | Name| Type| Mandatory| Description|
+  | -------- | -------- | -------- | -------- |
+  | callback | AsyncCallback&lt;boolean&gt; | Yes| Callback used to return the task removal result.|
 
 **Example**
-
+  
   ```js
+  let downloadTask;
   downloadTask.remove((err, result)=>{
       if(err) {
           console.error('Failed to remove the download task.');
@@ -963,18 +1279,24 @@ query(): Promise&lt;DownloadInfo&gt;
 
 Queries this download task. This API uses a promise to return the result.
 
+> **NOTE**
+> 
+> This API is deprecated since API version 9. You are advised to use [getTaskInfo<sup>9+</sup>](#gettaskinfo9).
+
 **Required permissions**: ohos.permission.INTERNET
 
 **System capability**: SystemCapability.MiscServices.Download
 
-**Parameters**
-    | Type| Description|
+**Return value**
+
+  | Type| Description|
   | -------- | -------- |
   | Promise&lt;[DownloadInfo](#downloadinfo7)&gt; | Promise used to return the download task information.|
 
 **Example**
-
+  
   ```js
+  let downloadTask;
   downloadTask.query().then((downloadInfo) => {    
       console.info('Download task queried. Data:' + JSON.stringify(downloadInfo))
   }) .catch((err) => {
@@ -989,19 +1311,24 @@ query(callback: AsyncCallback&lt;DownloadInfo&gt;): void
 
 Queries this download task. This API uses an asynchronous callback to return the result.
 
+> **NOTE**
+> 
+> This API is deprecated since API version 9. You are advised to use [getTaskInfo<sup>9+</sup>](#gettaskinfo9-1).
+
 **Required permissions**: ohos.permission.INTERNET
 
 **System capability**: SystemCapability.MiscServices.Download
 
 **Parameters**
 
-| Name| Type| Mandatory| Description|
-| -------- | -------- | -------- | -------- |
-| callback | AsyncCallback&lt;[DownloadInfo](#downloadinfo7)&gt; | Yes| Callback used to return the download task information.|
+  | Name| Type| Mandatory| Description|
+  | -------- | -------- | -------- | -------- |
+  | callback | AsyncCallback&lt;[DownloadInfo](#downloadinfo7)&gt; | Yes| Callback used to return the download task information.|
 
 **Example**
-
+  
   ```js
+  let downloadTask;
   downloadTask.query((err, downloadInfo)=>{
       if(err) {
           console.error('Failed to query the download mimeType. Cause:' + JSON.stringify(err));
@@ -1018,19 +1345,24 @@ queryMimeType(): Promise&lt;string&gt;
 
 Queries the **MimeType** of this download task. This API uses a promise to return the result.
 
+> **NOTE**
+> 
+> This API is deprecated since API version 9. You are advised to use [getTaskMimeType<sup>9+</sup>](#gettaskmimetype9).
+
 **Required permissions**: ohos.permission.INTERNET
 
 **System capability**: SystemCapability.MiscServices.Download
 
 **Return value**
 
-| Type| Description|
-| -------- | -------- |
-| Promise&lt;string&gt; | Promise used to return the **MimeType** of the download task.|
+  | Type| Description|
+  | -------- | -------- |
+  | Promise&lt;string&gt; | Promise used to return the **MimeType** of the download task.|
 
 **Example**
-
+  
   ```js
+  let downloadTask;
   downloadTask.queryMimeType().then((data) => {    
       console.info('Download task queried. Data:' + JSON.stringify(data));
   }).catch((err) => {
@@ -1045,19 +1377,24 @@ queryMimeType(callback: AsyncCallback&lt;string&gt;): void;
 
 Queries the **MimeType** of this download task. This API uses an asynchronous callback to return the result.
 
+> **NOTE**
+> 
+> This API is deprecated since API version 9. You are advised to use [getTaskMimeType<sup>9+</sup>](#gettaskmimetype9-1).
+
 **Required permissions**: ohos.permission.INTERNET
 
 **System capability**: SystemCapability.MiscServices.Download
 
 **Parameters**
 
-| Name| Type| Mandatory| Description|
-| -------- | -------- | -------- | -------- |
-| callback | AsyncCallback&lt;string&gt; | Yes| Callback used to return the **MimeType** of the download task.|
+  | Name| Type| Mandatory| Description|
+  | -------- | -------- | -------- | -------- |
+  | callback | AsyncCallback&lt;string&gt; | Yes| Callback used to return the **MimeType** of the download task.|
 
 **Example**
-
+  
   ```js
+  let downloadTask;
   downloadTask.queryMimeType((err, data)=>{
       if(err) {
           console.error('Failed to query the download mimeType. Cause:' + JSON.stringify(err));
@@ -1074,19 +1411,24 @@ pause(): Promise&lt;void&gt;
 
 Pauses this download task. This API uses a promise to return the result.
 
+> **NOTE**
+> 
+> This API is deprecated since API version 9. You are advised to use [suspend<sup>9+</sup>](#suspend9).
+
 **Required permissions**: ohos.permission.INTERNET
 
 **System capability**: SystemCapability.MiscServices.Download
 
 **Return value**
 
-| Type| Description|
-| -------- | -------- |
-| Promise&lt;void&gt; | Promise used to return the download task pause result.|
+  | Type| Description|
+  | -------- | -------- |
+  | Promise&lt;void&gt; | Promise used to return the download task pause result.|
 
 **Example**
-
+  
   ```js
+  let downloadTask;
   downloadTask.pause().then((result) => {    
       if (result) {
            console.info('Download task paused. ');
@@ -1103,6 +1445,10 @@ Pauses this download task. This API uses a promise to return the result.
 
 pause(callback: AsyncCallback&lt;void&gt;): void
 
+> **NOTE**
+> 
+> This API is deprecated since API version 9. You are advised to use [suspend<sup>9+</sup>](#suspend9-1).
+
 Pauses this download task. This API uses an asynchronous callback to return the result.
 
 **Required permissions**: ohos.permission.INTERNET
@@ -1111,13 +1457,14 @@ Pauses this download task. This API uses an asynchronous callback to return the
 
 **Parameters**
 
-| Name| Type| Mandatory| Description|
-| -------- | -------- | -------- | -------- |
-| callback | AsyncCallback&lt;void&gt; | Yes| Callback used to return the result.|
+  | Name| Type| Mandatory| Description|
+  | -------- | -------- | -------- | -------- |
+  | callback | AsyncCallback&lt;void&gt; | Yes| Callback used to return the result.|
 
 **Example**
-
+  
   ```js
+  let downloadTask;
   downloadTask.pause((err, result)=>{
       if(err) {
           console.error('Failed to pause the download task. Cause:' + JSON.stringify(err));
@@ -1138,20 +1485,344 @@ resume(): Promise&lt;void&gt;
 
 Resumes this download task. This API uses a promise to return the result.
 
+> **NOTE**
+> 
+> This API is deprecated since API version 9. You are advised to use [restore<sup>9+</sup>](#restore9).
+
+**Required permissions**: ohos.permission.INTERNET
+
+**System capability**: SystemCapability.MiscServices.Download
+
+**Return value**
+
+  | Type| Description|
+  | -------- | -------- |
+  | Promise&lt;void&gt; | Promise used to return the result.|
+
+**Example**
+  
+  ```js
+  let downloadTask;
+  downloadTask.resume().then((result) => {
+      if (result) {
+          console.info('Download task resumed.')
+      } else {
+          console.error('Failed to resume the download task. ');
+      }
+      console.info('Download task resumed.')
+  }).catch((err) => {
+      console.error('Failed to resume the download task. Cause:' + err);
+  });
+  ```
+
+
+### resume<sup>7+</sup>
+
+resume(callback: AsyncCallback&lt;void&gt;): void
+
+> **NOTE**
+> 
+> This API is deprecated since API version 9. You are advised to use [restore<sup>9+</sup>](#restore9-1).
+
+Resumes this download task. This API uses an asynchronous callback to return the result.
+
 **Required permissions**: ohos.permission.INTERNET
 
 **System capability**: SystemCapability.MiscServices.Download
 
 **Parameters**
 
+  | Name| Type| Mandatory| Description|
+  | -------- | -------- | -------- | -------- |
+  | callback | AsyncCallback&lt;void&gt; | Yes| Callback used to return the result.|
+
+**Example**
+  
+  ```js
+  let downloadTask;
+  downloadTask.resume((err, result)=>{
+      if (err) {
+          console.error('Failed to resume the download task. Cause:' + err);
+          return;
+      } 
+      if (result) {
+          console.info('Download task resumed.');
+      } else {
+          console.error('Failed to resume the download task.');
+      }
+  });
+  ```
+
+
+### delete<sup>9+</sup>
+
+delete(): Promise&lt;boolean&gt;
+
+Deletes this download task. This API uses a promise to return the result.
+
+**Required permissions**: ohos.permission.INTERNET
+
+**System capability**: SystemCapability.MiscServices.Download
+
+**Return value**
+
+| Type| Description|
+  | -------- | -------- |
+| Promise&lt;boolean&gt; | Promise used to return the result.|
+
+**Example**
+
+  ```js
+  let downloadTask;
+  downloadTask.delete().then((result) => {
+      if (result) {
+          console.info('Download task removed.');
+      } else {
+          console.error('Failed to remove the download task.');
+      }
+  }).catch ((err) => {
+      console.error('Failed to remove the download task.');
+  });
+  ```
+
+
+### delete<sup>9+</sup>
+
+delete(callback: AsyncCallback&lt;boolean&gt;): void
+
+Deletes this download task. This API uses an asynchronous callback to return the result.
+
+**Required permissions**: ohos.permission.INTERNET
+
+**System capability**: SystemCapability.MiscServices.Download
+
+**Parameters**
+
+| Name| Type| Mandatory| Description|
+  | -------- | -------- | -------- | -------- |
+| callback | AsyncCallback&lt;boolean&gt; | Yes| Callback used to return the result.|
+
+**Example**
+
+  ```js
+  let downloadTask;
+  downloadTask.delete((err, result)=>{
+      if(err) {
+          console.error('Failed to remove the download task.');
+          return;
+      } 
+      if (result) {
+          console.info('Download task removed.');
+      } else {
+          console.error('Failed to remove the download task.');
+      } 
+  });
+  ```
+
+
+### getTaskInfo<sup>9+</sup>
+
+getTaskInfo(): Promise&lt;DownloadInfo&gt;
+
+Queries this download task. This API uses a promise to return the result.
+
+**Required permissions**: ohos.permission.INTERNET
+
+**System capability**: SystemCapability.MiscServices.Download
+
+**Return value**
+
 | Type| Description|
 | -------- | -------- |
-| Promise&lt;void&gt; | Promise used to return the result.|
+| Promise&lt;[DownloadInfo](#downloadinfo7)&gt; | Promise used to return the download task information.|
 
 **Example**
 
   ```js
-  downloadTask.resume().then((result) => {
+  let downloadTask;
+  downloadTask.getTaskInfo().then((downloadInfo) => {    
+      console.info('Download task queried. Data:' + JSON.stringify(downloadInfo))
+  }) .catch((err) => {
+      console.error('Failed to query the download task. Cause:' + err)
+  });
+  ```
+
+
+### getTaskInfo<sup>9+</sup>
+
+query(callback: AsyncCallback&lt;DownloadInfo&gt;): void
+
+Queries this download task. This API uses an asynchronous callback to return the result.
+
+**Required permissions**: ohos.permission.INTERNET
+
+**System capability**: SystemCapability.MiscServices.Download
+
+**Parameters**
+
+| Name| Type| Mandatory| Description|
+  | -------- | -------- | -------- | -------- |
+| callback | AsyncCallback&lt;[DownloadInfo](#downloadinfo7)&gt; | Yes| Callback used to return the download task information.|
+
+**Example**
+
+  ```js
+  let downloadTask;
+  downloadTask.getTaskInfo((err, downloadInfo)=>{
+      if(err) {
+          console.error('Failed to query the download mimeType. Cause:' + JSON.stringify(err));
+      } else {
+          console.info('download query success. data:'+ JSON.stringify(downloadInfo));
+      }
+  });
+  ```
+
+
+### getTaskMimeType<sup>9+</sup>
+
+getTaskMimeType(): Promise&lt;string&gt;
+
+Obtains the **MimeType** of this download task. This API uses a promise to return the result.
+
+**Required permissions**: ohos.permission.INTERNET
+
+**System capability**: SystemCapability.MiscServices.Download
+
+**Return value**
+
+| Type| Description|
+  | -------- | -------- |
+| Promise&lt;string&gt; | Promise used to return the **MimeType** of the download task.|
+
+**Example**
+
+  ```js
+  let downloadTask;
+  downloadTask.getTaskMimeType().then((data) => {    
+      console.info('Download task queried. Data:' + JSON.stringify(data));
+  }).catch((err) => {
+      console.error('Failed to query the download MimeType. Cause:' + JSON.stringify(err))
+  });
+  ```
+
+
+### getTaskMimeType<sup>9+</sup>
+
+getTaskMimeType(callback: AsyncCallback&lt;string&gt;): void;
+
+Obtains the **MimeType** of this download task. This API uses an asynchronous callback to return the result.
+
+**Required permissions**: ohos.permission.INTERNET
+
+**System capability**: SystemCapability.MiscServices.Download
+
+**Parameters**
+
+| Name| Type| Mandatory| Description|
+  | -------- | -------- | -------- | -------- |
+| callback | AsyncCallback&lt;string&gt; | Yes| Callback used to return the **MimeType** of the download task.|
+
+**Example**
+
+  ```js
+  let downloadTask;
+  downloadTask.getTaskMimeType((err, data)=>{
+      if(err) {
+          console.error('Failed to query the download mimeType. Cause:' + JSON.stringify(err));
+      } else {
+          console.info('Download task queried. data:' + JSON.stringify(data));
+      }
+  });
+  ```
+
+
+### suspend<sup>9+</sup>
+
+suspend(): Promise&lt;boolean&gt;
+
+Pauses this download task. This API uses a promise to return the result.
+
+**Required permissions**: ohos.permission.INTERNET
+
+**System capability**: SystemCapability.MiscServices.Download
+
+**Return value**
+
+| Type| Description|
+  | -------- | -------- |
+| Promise&lt;boolean&gt; | Promise used to return the download task pause result.|
+
+**Example**
+
+  ```js
+  let downloadTask;
+  downloadTask.suspend().then((result) => {    
+      if (result) {
+           console.info('Download task paused. ');
+      } else {
+          console.error('Failed to pause the download task. Cause:' + JSON.stringify(result));
+      }
+  }).catch((err) => {
+      console.error('Failed to pause the download task. Cause:' + JSON.stringify(err));
+  });
+  ```
+
+
+### suspend<sup>9+</sup>
+
+suspend(callback: AsyncCallback&lt;boolean&gt;): void
+
+Pauses this download task. This API uses an asynchronous callback to return the result.
+
+**Required permissions**: ohos.permission.INTERNET
+
+**System capability**: SystemCapability.MiscServices.Download
+
+**Parameters**
+
+| Name| Type| Mandatory| Description|
+  | -------- | -------- | -------- | -------- |
+| callback | AsyncCallback&lt;boolean&gt; | Yes| Callback used to return the result.|
+
+**Example**
+
+  ```js
+  let downloadTask;
+  downloadTask.suspend((err, result)=>{
+      if(err) {
+          console.error('Failed to pause the download task. Cause:' + JSON.stringify(err));
+          return;
+      }
+      if (result) {
+           console.info('Download task paused. ');
+      } else {
+          console.error('Failed to pause the download task. Cause:' + JSON.stringify(result));
+      }
+  });
+  ```
+
+
+### restore<sup>9+</sup>
+
+restore(): Promise&lt;boolean&gt;
+
+Resumes this download task. This API uses a promise to return the result.
+
+**Required permissions**: ohos.permission.INTERNET
+
+**System capability**: SystemCapability.MiscServices.Download
+
+**Return value**
+
+| Type| Description|
+  | -------- | -------- |
+| Promise&lt;boolean&gt; | Promise used to return the result.|
+
+**Example**
+
+  ```js
+  let downloadTask;
+  downloadTask.restore().then((result) => {
       if (result) {
           console.info('Download task resumed.')
       } else {
@@ -1164,9 +1835,9 @@ Resumes this download task. This API uses a promise to return the result.
   ```
 
 
-### resume<sup>7+</sup>
+### restore<sup>9+</sup>
 
-resume(callback: AsyncCallback&lt;void&gt;): void
+restore(callback: AsyncCallback&lt;boolean&gt;): void
 
 Resumes this download task. This API uses an asynchronous callback to return the result.
 
@@ -1177,13 +1848,14 @@ Resumes this download task. This API uses an asynchronous callback to return the
 **Parameters**
 
 | Name| Type| Mandatory| Description|
-| -------- | -------- | -------- | -------- |
-| callback | AsyncCallback&lt;void&gt; | Yes| Callback used to return the result.|
+  | -------- | -------- | -------- | -------- |
+| callback | AsyncCallback&lt;boolean&gt; | Yes| Callback used to return the result.|
 
 **Example**
 
   ```js
-  downloadTask.resume((err, result)=>{
+  let downloadTask;
+  downloadTask.restore((err, result)=>{
       if (err) {
           console.error('Failed to resume the download task. Cause:' + err);
           return;
@@ -1206,9 +1878,9 @@ Resumes this download task. This API uses an asynchronous callback to return the
 | Name| Type| Mandatory| Description|
 | -------- | -------- | -------- | -------- |
 | url | string | Yes| Resource URL.|
-| header | object | No| HTTP or HTTPS header added to a download request.|
-| enableMetered | boolean | No| Whether download is allowed on a metered connection.<br>- **true**: yes<br> **false**: no|
-| enableRoaming | boolean | No| Whether download is allowed on a roaming network.<br>- **true**: yes<br> **false**: no|
+| header | Object | No| HTTPS flag header to be included in the download request.<br>The **X-TLS-Version** parameter in **header** specifies the TLS version to be used. If this parameter is not set, the CURL_SSLVERSION_TLSv1_2 version is used. Available options are as follows:<br>CURL_SSLVERSION_TLSv1_0<br>CURL_SSLVERSION_TLSv1_1<br>CURL_SSLVERSION_TLSv1_2<br>CURL_SSLVERSION_TLSv1_3<br>The **X-Cipher-List** parameter in **header** specifies the cipher suite list to be used. If this parameter is not specified, the secure cipher suite list is used. Available options are as follows:<br>- The TLS 1.2 cipher suite list includes the following ciphers:<br>TLS_DHE_RSA_WITH_AES_128_GCM_SHA256,TLS_DHE_RSA_WITH_AES_256_GCM_SHA384,<br>TLS_DHE_DSS_WITH_AES_128_GCM_SHA256,TLS_DSS_RSA_WITH_AES_256_GCM_SHA384,<br>TLS_PSK_WITH_AES_256_GCM_SHA384,TLS_DHE_PSK_WITH_AES_128_GCM_SHA256,<br>TLS_DHE_PSK_WITH_AES_256_GCM_SHA384,TLS_DHE_PSK_WITH_CHACHA20_POLY1305_SHA256,<br>TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256,TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384,<br>TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256,TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384,<br>TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305_SHA256,TLS_ECDHE_PSK_WITH_CHACHA20_POLY1305_SHA256,<br>TLS_ECDHE_PSK_WITH_AES_128_GCM_SHA256,TLS_ECDHE_PSK_WITH_AES_256_GCM_SHA384,<br>TLS_ECDHE_PSK_WITH_AES_128_GCM_SHA256,TLS_DHE_RSA_WITH_AES_128_CCM,<br>TLS_DHE_RSA_WITH_AES_256_CCM,TLS_DHE_RSA_WITH_CHACHA20_POLY1305_SHA256,<br>TLS_PSK_WITH_AES_256_CCM,TLS_DHE_PSK_WITH_AES_128_CCM,<br>TLS_DHE_PSK_WITH_AES_256_CCM,TLS_ECDHE_ECDSA_WITH_AES_128_CCM,<br>TLS_ECDHE_ECDSA_WITH_AES_256_CCM,TLS_ECDHE_ECDSA_WITH_CHACHA20_POLY1305_SHA256<br>- The TLS 1.3 cipher suite list includes the following ciphers:<br>TLS_AES_128_GCM_SHA256,TLS_AES_256_GCM_SHA384,TLS_CHACHA20_POLY1305_SHA256,TLS_AES_128_CCM_SHA256<br>- The TLS 1.3 cipher suite list adds the Chinese national cryptographic algorithm:<br>TLS_SM4_GCM_SM3,TLS_SM4_CCM_SM3 |
+| enableMetered | boolean | No| Whether download is allowed on a metered connection.<br>- **true**: yes<br>- **false**: no|
+| enableRoaming | boolean | No| Whether download is allowed on a roaming network.<br>- **true**: yes<br>- **false**: no|
 | description | string | No| Description of the download session.|
 | filePath<sup>7+</sup> | string | No| Download path. (The default path is **'internal://cache/'**.)<br>- filePath:'workspace/test.txt': The **workspace** directory is created in the default path to store files.<br>- filePath:'test.txt': Files are stored in the default path.<br>- filePath:'workspace/': The **workspace** directory is created in the default path to store files.|
 | networkType | number | No| Network type allowed for download.<br>- NETWORK_MOBILE: 0x00000001<br>- NETWORK_WIFI: 0x00010000|
diff --git a/en/application-dev/reference/apis/js-apis-system-parameterV9.md b/en/application-dev/reference/apis/js-apis-system-parameterV9.md
index 5e725ca92b1138a2ebc579036748343c50417b32..23ad27a04596da4b52bc254c931670845f39fb5f 100644
--- a/en/application-dev/reference/apis/js-apis-system-parameterV9.md
+++ b/en/application-dev/reference/apis/js-apis-system-parameterV9.md
@@ -7,7 +7,7 @@ For details about the system parameter design principles and definitions, see
 > **NOTE**
 > - The initial APIs of this module are supported since API version 9. Newly added APIs will be marked with a superscript to indicate their earliest API version.
 > - The APIs provided by this module are system APIs.
-> - Third-party applications cannot use the APIs provided by this module, because system parameters each require specific discretionary access control (DAC) and MAC permissions.
+> - Third-party applications cannot use the APIs provided by this module, because system parameters each require specific discretionary access control (DAC) and mandatory access control (MAC) permissions.
 
 ## Modules to Import
 
diff --git a/en/application-dev/reference/errorcodes/errorcode-request.md b/en/application-dev/reference/errorcodes/errorcode-request.md
new file mode 100644
index 0000000000000000000000000000000000000000..20de2eeb4639a8e85da7b916b6524c427ca23537
--- /dev/null
+++ b/en/application-dev/reference/errorcodes/errorcode-request.md
@@ -0,0 +1,55 @@
+# Upload and Download Error Codes
+
+## 13400001 File Operation Error
+
+**Error Message**
+
+File operation error.
+
+**Description**
+
+This error code is reported when a file operation error occurs in invoking the **uploadFile** or **downloadFile** API.
+
+**Possible Causes**
+
+The file permission is insufficient.
+
+**Solution**
+
+Make sure you have the required permission on the target files.
+
+## 13400002 File Path Error
+
+**Error Message**
+
+Bad file path.
+
+**Description**
+
+This error code is reported when a file path error occurs in invoking the **uploadFile** or **downloadFile** API.
+
+**Possible Causes**
+
+The file path is incorrect.
+
+**Solution**
+
+Verify the file path.
+
+## 13400003 Service Error
+
+**Error Message**
+
+Task manager service error.
+
+**Description**
+
+This error code is reported when a task manager service error occurs in invoking the **downloadFile** API.
+
+**Possible Causes**
+
+The task fails to be created.
+
+**Solution**
+
+Verify the task settings.
diff --git a/en/application-dev/reference/errorcodes/errorcode-system-parameterV9.md b/en/application-dev/reference/errorcodes/errorcode-system-parameterV9.md
new file mode 100644
index 0000000000000000000000000000000000000000..f959417bd8b1bef207591ce1178366791e202a01
--- /dev/null
+++ b/en/application-dev/reference/errorcodes/errorcode-system-parameterV9.md
@@ -0,0 +1,74 @@
+# System Parameter Error Codes
+
+## 14700101 Failure to Query the System Parameter
+
+**Error Message**
+
+System parameter can not be found.
+
+**Description**
+
+This error code is reported when the parameter does not exist in the workspace or no key has been set for the parameter.
+
+**Possible Causes**
+
+The parameter is not set or fails to be set.
+
+**Solution**
+
+Set the parameter correctly.
+
+## 14700102 Invalid System Parameter Value
+
+**Error Message**
+
+System parameter value is invalid.
+
+**Description**
+
+This error code is reported when the value of the system parameter is invalid.
+
+**Possible Causes**
+
+The value of the system parameter is empty, is out of range, or contains special characters, for example, "const..param.xxx".
+
+**Solution**
+
+Set the value to a valid string.
+
+## 14700103 Permission Denial for the Operation on the System Permission
+
+**Error Message**
+
+System permission operation permission denied.
+
+**Description**
+
+This error code is reported when the system parameter does not have the discretionary access control (DAC) or mandatory access control (MAC) permission.
+
+**Possible Causes**
+
+The DAC or MAC permission is not configured.
+
+**Solution**
+
+Add the DAC or MAC permission as needed.
+
+## 14700104 Internal System Error, Including Out of Memory and Deadlock
+
+**Error Message**
+
+System internal error including out of memory, deadlock etc.
+
+**Description**
+
+This error code is reported when the attempt to modify the **const** attribute settings, the socket connection, or the memory copy fails.
+
+**Possible Causes**
+
+The socket connection is abnormal, or the node fails to be added or obtained.
+
+**Solution**
+
+1. Analyze the memory usage of the entire process and eliminate memory leak.
+2. If you are in a multi-thread scenario, check the error stack for deadlock.