>>Operation:
1.Remove battery and insert battery back.
2.Press and hold 'VolumeUp' and 'VolumeDown' keys.
3.Please insert USB cable within 60 seconds.
>>Analysis of USB port,Please insert phone USB cable.
>>Phone found[SPRD U2S Diag (COM21)]
>>Internal version: SPRD3
>>Boot downloaded.
>>INFERNO SPRD 773X bootloader v5.0
>>Boot downloaded.
>>Boot downloading failed
....pls update spd module....
