Step 1: Download the file that needs to be swiped, extract the file in zip format, and then put it in the root directory of TF memory card. Then turn it off, take out the battery 10 seconds, put it back, hold down the volume+,and then press the power button to enter the card swiping mode. Step 2: Press the volume button up and down, press the power button to select, and select "Select to update from SD card" when brushing your teeth. Step 3: Select the brush package you downloaded and drive it. Or patch file (note that the file package cannot have a Chinese name). Step 5: Select Boot Brush. To restore the factory settings and return to the first page, select Clear Data/Restore Factory Settings, and then select Yes!

Brush machine is risky, please be careful when brushing machine.