I was following this guide:
After I get to the flashing part of Step2 and select LGP920_110622.dll and 28bRTbig_AP.bin but after selecting the port 1 and clicking start, my I connect the phone while holding Vol up and it starts the process but after showing "EBL Writing start" It will stall there then eventually show:
Start EBL error!
Error WM Progress MSG twice and above that says Download FAIL! (95 sec).
I am running Windows 7 64 bits if that helps