Well, the simple (and most accurate) answer is that you need the LiteOns back. The main complication back then was extracting the key. Once you had that in the open, it was just a matter of not losing it. Phat LiteOns are actually very easy to work with once you have the key. For that matter, the extraction process has gotten a lot easier, and does not require soldering or trace cutting anymore.
But back to the issue at hand. Modern dashes very easilly detect spoofed drives, and spoofed Sammys are especially easy to detect. You are going to need phat LiteOn drives to get back up and running. They are roughly $35/ea most places. The rev version (7xxxx, 8xxxx, 9xxxx) doesn't matter because modern dashes flash them all to 02510C anyway.
Once you are back up with proper drives running stock firmware with your keys, you will be able to update.
Read this... it's a little outdated, but should still help you get past your problem
Spoofing 101 - http://karma.xzibition.com/~CarpeDiem/spoof_fail.htm
Update Loop fix: http://karma.xzibition.com/~CarpeDiem/update_loop.htm
Instructions on how to do all of this are also in the JungleFlasher tut. Hope this helps!This post has been edited by CarpeDiem0: Apr 7 2012, 09:57 AM