one
First, enter the recovery interface (to shut down the machine first, press the volume key HOME and press the power key until the recovery interface appears). The operation mode of the power key is normal. The volume key goes up and down, the left key goes down, the right key goes back, and the HOME key goes down. Different versions have different operation methods
two
Then brush the machine. Before brushing, restore the factory mode, and then select item 5. Select the first project to confirm and find your own ZIP format file
three
The whole brushing process takes about 3 minutes. After finishing the brush, go back to the main interface and select the first item to restart (the restart time is a little long, please wait patiently, waiting for a long time to enter the desktop means no command, that is, a crash occurs. If you select reset, the buyer itself has a reset key, which can be restored to the previous factory, and then reset to use
