Hello all...I've read a bunch of posts with this subject - but none with a definitive answer. Here's the deal. I swapped the DVD Drive of a new XBOX 360 with that of a launch Unit. I have the new guts with an old drive. Old 360 was giving me the three rings of death. My old was flashed, so I wanted to keep it. Both drives were Hitachi's. Here's the old drive I have with the new guts: GDR-3120L from Sept 05 0046 DH No Idea what firmware it was flahed with, as I did not flash it myself. Plays DVDs and music CDs, but no Games, original or backup. Please Help!