OK, first of all...
I have NONE of the backup files that were created on the first flash.
Before someone says "there's no excuse for that"... There sure is. This was originally flashed for a friend. We traded boxes much later. (Exploits/Drive Preferences) For some reason, he had deleted the backup files.
The drive, and the Xtreme4.x both WORK. I just want to upgrade the firmware.
This guide is awesome http://forums.xbox-scene.com/index.php?showtopic=573381#
However i'm having difficulty solidly interpreting:
Is it saying I can just dump my 4.x extreme as the orig.bin, and use the key from THAT?