diff --git a/en/device-dev/quick-start/ubuntu-build-environment.md b/en/device-dev/quick-start/ubuntu-build-environment.md
index 50505a9c04a17d2af37c9974bd05d46f5dfc69a0..dcefedcd48082026b413affdbc8b0e1c56979e62 100644
--- a/en/device-dev/quick-start/ubuntu-build-environment.md
+++ b/en/device-dev/quick-start/ubuntu-build-environment.md
@@ -88,10 +88,10 @@ The following table describes the tools and source code required for setting up
Functions as the compiler toolchain.
-https://repo.huaweicloud.com/harmonyos/compiler/clang/10.0.1-62608/linux/llvm.tar.gz
+ | For master and OpenHarmony_2.x branch/tag, please use v10.0.1 from the following link: https://repo.huaweicloud.com/harmonyos/compiler/clang/10.0.1-62608/linux/llvm.tar.gz
|
-For the OpenHarmony_1.0.1_release, download LLVM from the following link:
+ |
For OpenHarmony_1.x branch/tag, please use v9.0.0 from the following link:
https://repo.huaweicloud.com/harmonyos/compiler/clang/9.0.0-36191/linux/llvm-linux-9.0.0-36191.tar
|
@@ -282,7 +282,7 @@ You need to acquire [source code](../get-code/source-code-acquisition.md), down
2. [Download LLVM](https://repo.huaweicloud.com/harmonyos/compiler/clang/10.0.1-62608/linux/llvm.tar.gz).
>![](public_sys-resources/icon-note.gif) **NOTE:**
- >For the OpenHarmony\_1.0.1\_release, click [here](https://repo.huaweicloud.com/harmonyos/compiler/clang/9.0.0-36191/linux/llvm-linux-9.0.0-36191.tar) to download LLVM.
+ >For OpenHarmony\_1.x branch/tag, click [here](https://repo.huaweicloud.com/harmonyos/compiler/clang/9.0.0-36191/linux/llvm-linux-9.0.0-36191.tar) to download LLVM.
3. Decompress the LLVM installation package to **\~/llvm**.
@@ -291,7 +291,7 @@ You need to acquire [source code](../get-code/source-code-acquisition.md), down
```
>![](public_sys-resources/icon-note.gif) **NOTE:**
- >For the OpenHarmony\_1.0.1\_release, run the following command to decompress the LLVM installation package:
+ >For OpenHarmony\_1.x branch/tag, run the following command to decompress the LLVM installation package:
>```
>tar -xvf llvm-linux-9.0.0-36191.tar -C ~/
>```
diff --git "a/zh-cn/device-dev/quick-start/Ubuntu\347\274\226\350\257\221\347\216\257\345\242\203\345\207\206\345\244\207.md" "b/zh-cn/device-dev/quick-start/Ubuntu\347\274\226\350\257\221\347\216\257\345\242\203\345\207\206\345\244\207.md"
index 42cb2c61519ba87139c084eac4ba7a84bccf7b0e..3f64dd3383059e40abef0e555618314c17afe72c 100755
--- "a/zh-cn/device-dev/quick-start/Ubuntu\347\274\226\350\257\221\347\216\257\345\242\203\345\207\206\345\244\207.md"
+++ "b/zh-cn/device-dev/quick-start/Ubuntu\347\274\226\350\257\221\347\216\257\345\242\203\345\207\206\345\244\207.md"
@@ -79,10 +79,10 @@ Linux服务器通用环境配置需要的工具及其获取途径如下表所示
编译工具链
-https://repo.huaweicloud.com/harmonyos/compiler/clang/10.0.1-62608/linux/llvm.tar.gz
+ | Master及OpenHarmony_v2.x分支/标签,请使用以下10.0.1版本: https://repo.huaweicloud.com/harmonyos/compiler/clang/10.0.1-62608/linux/llvm.tar.gz
|
-针对OpenHarmony_1.0.1_release分支使用以下链接下载:
+ |
OpenHarmony_v1.x分支/标签,请使用以下9.0.0版本:
https://repo.huaweicloud.com/harmonyos/compiler/clang/9.0.0-36191/linux/llvm-linux-9.0.0-36191.tar
|
@@ -244,7 +244,7 @@ Linux服务器通用环境配置需要的工具及其获取途径如下表所示
2. [下载LLVM工具](https://repo.huaweicloud.com/harmonyos/compiler/clang/10.0.1-62608/linux/llvm.tar.gz)。
>![](public_sys-resources/icon-note.gif) **说明:**
- >针对OpenHarmony\_1.0.1\_release分支使用此链接[下载LLVM工具](https://repo.huaweicloud.com/harmonyos/compiler/clang/9.0.0-36191/linux/llvm-linux-9.0.0-36191.tar)。
+ >针对OpenHarmony\_v1.x分支/标签,使用此链接[下载LLVM工具](https://repo.huaweicloud.com/harmonyos/compiler/clang/9.0.0-36191/linux/llvm-linux-9.0.0-36191.tar)。
3. 解压LLVM安装包至\~/llvm路径下。
@@ -253,7 +253,7 @@ Linux服务器通用环境配置需要的工具及其获取途径如下表所示
```
>![](public_sys-resources/icon-note.gif) **说明:**
- >针对OpenHarmony\_1.0.1\_release分支使用如下命令解压:
+ >针对OpenHarmony\_v1.x分支/标签,使用如下命令解压:
>```
>tar -xvf llvm-linux-9.0.0-36191.tar -C ~/
>```