1. When you connect a computer through a USB cable, you will recognize that there is a removable storage disk marked Recovery, and the available space is 500MB(mx2 shows a drive letter with the same storage disk capacity).

2. Put the firmware file in the root directory of the disk. Note: the file name and suffix of update.bin cannot be modified.

3. Disconnect, check system updates and clear user data, and click "Start" in the lower right corner of the screen. After the firmware file is verified, it will automatically enter the brushing process.

4. After a few minutes, you will see the welcome interface of the system, and the update is complete.

What should I pay attention to when brushing my teeth:

1. Only users who have downgraded firmware or patched Android signature vulnerabilities need to clear user data. Do not select this option when updating the firmware in other cases.

2. In the recovery interface, you can move up and down by the volume button and confirm by the power button.

3. In the recovery interface, quickly press the volume plus key for 5 times and the volume minus key for 5 times (the order can be reversed) to enter the egg mode of erasing all data of the mobile phone. Data is valuable, and it is not recommended to use it unless there is special need.