okay i downloaded and installed the ipod touch 2g 3.0 beta 5. i used it, but then i wanted to go ahead and switch back to the official 2.2.1 so i could jailbreak it again. on my own computer (running windows xp pro) the ipod wouldn't show up in iTunes but it would show up in windows explorer. when i used a different computer, iTunes detected it in recovery mode (not dfu) and i downloaded the 2.2.1 firmware. iTunes then attempts to restore it but never gets past "Preparing to back up iPod "iPod" or something like that. Help!!!!! Please!!!!!!!! p.s. i don't know how to put it in DFU mode when the screen gives you the usb cable saying plug it into itunes (i also have a purple splashscreen instead of a black splashcreen, if that helps at all).