I recently flashed a ms28 drive witht the xtrem52b fw! I have a via chipset and have done a hitachi drive with no errors! I followed the hacking for dummies guide and it al works as it should have, including flashing of the drive! once i tried to play my backup i got a please inert this into an xbox360 screen! it also says this with all orginals i have!! i only have one file in the backup which was created its called xtremefw.bin. I have tried to return to the backup which was created.it also was completed with no errors and i still get that same screen! sorry for such a long post! any help would be great!!