Ok, i flashed the first ms-28 drive and it worked fine. Then i had another ms-28 drive and flashed it the same exact way. The first xbox would boot teh game, but the second xbox wouldn't. Any ideas? Thanks -things i forgot to say.. the first xbox, which works, is the premium edition, which has a hard drive, and teh other is just the core edition with no hard drive. -when i boot the game in the second xbox it doesnt show up with a bad media warning or anything, it just tries to read the disc until it stops reading it and says open tray.