Like others i tried every way possible and it didn't work recently think i discovered a new method i pasted it here from my previous post in my no wifi fix topic on page 2........ I wrote "Ok i solved the downgrade issue, i just found a new way to downgrade the ipod touch!!! Screw the error codes what you do is you get itunes 7.5 and try to downgrade in DFU mode to the desired firmware doesn't matter i did 2.2.1 and 2.0 down to 1.1.5 (don't do 1.1.4 itunes won't verify that software and won't even try to restore so do 1.1.5 and then downgrade 1.1.4 in Itunes 9)once your ipod looks like it did a normal update you'll get some error (1, 5, 20, 1601 etc.) i got em all but what i got in common was that i got stuck in recovery/brick mode. Once your stuck in recovery/brick mode uninstall an upgrade back to Itunes 9 then make sure your out of DFU mode and in brick recovery (you should be in it already cause itunes 7.5 kicked me out and into brick mode)then hit restore and pick any firmware you want first time around you'll be back in brick mode, then restore again and IT WORKS!!!! I've done it 2/3 times over the last days originally i used itunes 9 just to save me from brick mode but i discovered it was a downgrader too... I want to help put this mode out there cause i suffered alot the last 3 days..Good Luck!!"