Here are two tutorial versions, SD with sound, and HD without sound, click
Short instruction:
Install “V3_setup_V3.2.8.exe” on a Win PC
Load “dv8910-hungphutho-v1.img” to Burning Tool
UNCHECK “Verify Bootloader” BOX !!!
Connect G1 with USB_A to USB_A cable to PC (use 2nd USB port away from uSD card port)
Press and hold Reset button and apply power to G1.
(Flashing should start now. If it does not, disconnect box and close Burn Tool. Repeat
the procedure until it starts flashing. I had to do it twice before it started flashing)
After it flashes for about 5-10 seconds release Reset button.
When flashing finishes close Burn Tool.
RUN “flash.bat” file…
Edit: Link to public dowload Firmware img 781.46 MB file on MEGA
Link to download video instructions from here
That’s all, enjoy 