Download the latest installation package of Xiaomi 4 mobile phone, and the official brush package is provided. (Note: To download the card brush package, because the brush package of Xiaomi mobile phone is divided into card brush package and line brush package, the card brush package should be selected here), download the card brush package to the computer, decompress if the downloaded brush package is in rar format, and do not decompress if it is in direct zip format, and then find the package in zip format. Then rename the zip package to update.zip, and then copy the update.zip package directly to the root directory of the phone's built-in storage.

The mobile phone enters recovery (sometimes recovery must be Fang's recovery, because the official recovery can only brush Xiaomi's official bag), and then when the mobile phone is turned off, press and hold the volume increase button+power button of the mobile phone at the same time (both buttons are pressed at the same time), the screen lights up, and release the button to enter.

Select Simplified Chinese and confirm. In the recovery interface, the volume key indicates that selecting the power key indicates confirmation. We use the volume key to select the second one, clear the data, press the power key to confirm the input, and then use the volume key to select the above three cleared options. This is Sanqing. Press the power button to confirm and clear in turn.

After cleaning for three times, return to the recovery main interface, select to install update.zip into the system and confirm it together, select to confirm and wait for completion, and select to restart the system.