(2. Press and hold the power on button volume down, and the green Recvoery will appear. 3. When a bunch of options are displayed, press the volume up and down control option box, select Applyupdate from sdcard, and press the power on button to acknowledge. 4. Wait for the end of brushing. 5. Select the first item, press the power on button, and restart the phone. This document includes the following accessories:)