Why can't excellent schools solve math problems? If not, it is recommended to brush the machine.

1, turn it off.

2. Press and hold the power button (power button)+volume button for about ten seconds at the same time to enter the recovery mode.

3. Clear the device memory data and cache (double-click to clear), click two erasing options respectively, enter and select Yes. , confirm to clear the file.

4. Select the applyupdatefromsdcard option, and select the downloaded brush machine package.

5. After the brushing is completed. You can choose rebootsystemnow to execute and restart.