In the shutdown state, press and hold the "*# power-on button" at the same time after the white LCD screen is inserted into the USB data cable to download. After the download is completed, the restart is completed and the data cable can be unplugged.
Shut down at the same time to hold down the "#开机键" LCD white screen after inserting the USB cable download, after the download is completed to restart to unplug the data cable.
In the power off state, press and hold the "* # power on key" LCD white screen at the same time, and then insert the USB data cable to download. After the download is completed, restart and unplug the data cable.<br>