1, first download the latest ROM from MIUI official website.

2. Download the latest development package that meets the model of the mobile phone.

3. Connect the mobile phone to the computer and copy the downloaded development package to the downloaded_rom directory of the mobile phone.

4. In phone settings, click System Update.

5. After entering the system update interface, click the function key on the left side of the mobile phone, and then select the installation package.

6. Find the complete package file of the development version just copied to the mobile phone in the downloaded_rom directory of the mobile phone.

7. Click Update Now or Start Update.

8. The system will start to update automatically and then restart.

9. After updating the system, restart the mobile phone (if it is a development version, the previous steps will be omitted) and then find it safe on the mobile phone. Heart, looking for authorization management.

10, opening allows the application to obtain ROOT permission to complete.