790T:
1.Long press “Charging” button till “CONN”shows on the LED display.
2.Click “update”.
3.Input password of the WIFI.
4.Click “Connect and update”.

811GB(Only for European countries):
1.Long press “power” button 3 second till the WIFI flash slowly.
2.Click “update”.
3.Input password of the WIFI.
4.Click “Connect and update”.