diff --git a/en/device-dev/subsystems/subsys-build-FAQ.md b/en/device-dev/subsystems/subsys-build-FAQ.md
index 3922581ea092b7225683c1bfdc8016de249526cb..f6df39da206a6243b65d5bac7266ed374f3b232e 100644
--- a/en/device-dev/subsystems/subsys-build-FAQ.md
+++ b/en/device-dev/subsystems/subsys-build-FAQ.md
@@ -4,29 +4,19 @@
### "usr/sbin/ninja: invalid option -- w"
-- **Symptom**
+- **Symptom**
The build fails, and "usr/sbin/ninja: invalid option -- w" is displayed.
- The build fails, and **usr/sbin/ninja: invalid option -- w** is displayed.
+- **Possible Causes**
The Ninja version in use does not support the **--w** option.
-- **Possible Causes**
-
- The Ninja version in use does not support the **--w** option.
-
-- **Solution**
-
- Uninstall Ninja and GN, and [install Ninja and GN of the required version](../../device-dev/get-code/gettools-ide.md).
+- **Solution**
Uninstall Ninja and GN, and [install Ninja and GN of the required version](../../device-dev/get-code/gettools-ide.md).
### "/usr/bin/ld: cannot find -lncurses"
-- **Symptom**
+- **Symptom**
The build fails, and "/usr/bin/ld: cannot find -lncurses" is displayed.
- The build fails, and **/usr/bin/ld: cannot find -lncurses** is displayed.
+- **Possible Causes**
The ncurses library is not available.
-- **Possible Causes**
-
- The ncurses library is not installed.
-
-- **Solution**
+- **Solution**
```shell
sudo apt-get install lib32ncurses5-dev
@@ -34,15 +24,11 @@
### "line 77: mcopy: command not found"
-- **Symptom**
-
- The build fails, and **line 77: mcopy: command not found** is displayed.
+- **Symptom**
The build fails, and "line 77: mcopy: command not found" is displayed.
-- **Possible Causes**
+- **Possible Causes**
mcopy is not available.
- mcopy is not installed.
-
-- **Solution**
+- **Solution**
```shell
sudo apt-get install dosfstools mtools
@@ -50,39 +36,25 @@
### "riscv32-unknown-elf-gcc: error trying to exec 'cc1': execvp: No such file or directory"
-- **Symptom**
-
- The build fails, and the following information is displayed:
**riscv32-unknown-elf-gcc: error trying to exec 'cc1': execvp: No such file or directory**
-
-- **Possible Causes**
+- **Symptom**
The build fails, and "riscv32-unknown-elf-gcc: error trying to exec 'cc1': execvp: No such file or directory" is displayed.
- You do not have the permission to access files in the RISC-V compiler directory.
+- **Possible Causes**
You do not have the permission to access files in the RISC-V compiler directory.
-- **Solution**
+- **Solution**
1. Run the following command to locate **gcc_riscv32**.
- 1. Run the following command to locate **gcc_riscv32**:
-
- ```shell
- which riscv32-unknown-elf-gcc
- ```
+ ```shell
+ which riscv32-unknown-elf-gcc
+ ```
-
-
- 2. Run the **chmod** command to change the directory permission to **755**.
-
-
+ 2. Run the **chmod** command to change the permission for the directory to **755**.
### "No module named 'Crypto'"
-- **Symptom**
-
- The build fails, and **No module named 'Crypto'** is displayed.
+- **Symptom**
The build fails, and "No module named'Crypto'" is displayed.
-- **Possible Causes**
+- **Possible Causes**
Crypto is not installed in Python3.
- Crypto is not installed in Python3.
-
-- **Solution**
+- **Solution**
1. Run the following command to query the Python version:
@@ -96,17 +68,13 @@
sudo pip3 install pycryptodome
```
-### "xx.sh : xx unexpected operator"
-
-- **Symptom**
-
- The build fails, and **xx.sh [: xx unexpected operator** is displayed.
+### "xx.sh: xx unexpected operator"
-- **Possible Causes**
+- **Symptom**
The build fails, and " xx.sh [: xx unexpected operator" is displayed.
- The build environment shell is not bash.
+- **Possible Causes**
The build environment shell is not bash.
-- **Solution**
+- **Solution**
```shell
sudo rm -rf /bin/sh
@@ -114,20 +82,31 @@
```
-### "some services are not authenticated. Listed as follows"
+### "some services are not authenticated. Listed as follow"
+
+- **Symptom**
The build fails, and " some services are not authenticated. Listed as follow" is displayed.
+
+- **Possible Causes**
In the .cfg file of the processes listed in the error message, **uid** is set to **root** or **system**. However, these processes are not high-privilege processes defined by the product.
+
+- **Solution**
+
+ Modify the process .cfg file to reduce the privilege level. Do not set **uid** to **root** or **system** unless necessary.
+
+ If a process must have the **root** or **system** privilege due to service requirements, modify the **high_privilege_process_list.json** file with the approval of the security experts. The **high_privilege_process_list.json** file is located in **vendor/***{company_name}/{product_name }***/security_config**.
-- **Symptom**
+ For example, the file for rk3586 is **//vendor/hihope/rk3568/security_config/high_privilege_process_list.json**.
- The build fails, and "some services are not authenticated. Listed as follows" is displayed.
-- **Possible Causes**
+### "Error: some services do not match with critical whitelist"
- For the processes listed in the error information, the UID is set to **root** or **system** in the process configuration files. However, these processes are not high-privilege processes defined by the product.
+- **Symptom**
The build fails, and "Error: some services do not match with critical whitelist" is displayed.
-- **Solution**
+- **Possible Causes**
In the .cfg file of the processes listed in the error message, the **critical** field is defined and enabled. However, the **critical** field is not allowed for the processes, or the **critical** setting does not match the settings in the whitelist.
- Modify the process configuration file to reduce the privilege level. Do not set **UID** to **root** or **system** unless necessary.
+- **Solution**
- If a process must have the **root** or **system** privilege due to service requirements, modify the **high_privilege_process_list.json** file with the approval of security experts. The **high_privilege_process_list.json** file is located in **vendor/**{*company_name*}/{*product_name*}**/security_config**. For example, the file for rk3586 is **//vendor/hihope/rk3568/security_config/high_privilege_process_list.json**.
+ Remove the **critical** field or set the first bit of the **critical** field to **0** in the .cfg file of the processes. Do not enable the **critical** field unless necessary.
+ For details about how to use the **critical** field, see [Service Management](subsys-boot-init-service.md). If **critical** needs to be enabled for a process due to service requirements, modify the **//vendor/{company_name}/{product_name}/security_config/critical_reboot_process_list.json** file with the approval of the security experts.
+ For example, the critical_reboot process control whitelist of rk3586 is **//vendor/hihope/rk3568/security_config/critical_reboot_process_list.json**.