I am new to flash in. I have recently purchased xbox360 from the Craigslist. It is a old phat. It has Hitachi (GDR-3120L) with ROM version 0079FL. When I purchased, he said it was already flashed so I tried playing XDG2 game called Angry Birds and it worked. But when I try to play other my back up XDG3 game, it did not work and asking me to update. But somewhere I read that you need to have update (AP2.5....)my version. So I come to know that I need to update my flash to work. Here are my confusions. 1. If I buy X360 USB pro, that will be ok to flash my drive (i have only laptop no desktop)or do I need other things to make it work. 2. I gone thro' Jungelflasher tutorial and It says if your Hitachi drive (under troubleshoot) is flashed earlier then you need to flash to stock firmware first then update to ixtreme3.0. How do I flash to stock firmware and/or get the stock file? I read a lot of stuff from internet and as I read more I get more confuse. I will be very happy if some expert can help me out with my confusion. From Where should I start. Thanks for help in advance.