FOLLOW this guide and Steps http://forum.xda-developers.com/show....php?t=2475045 but using G3 files, sure
p.s. Disconnect usb cable only when you see TEST 3 image on G3 (it could be 4/5 minutes before you see it) - remove battery, and restart G3.
Flashtool (last Version)
if you rehost this job in other places (for viet guys) write real source
Donate a Beer if you want to support always updated repository FW