I followed the new "untethered" jailbreak tutorial, and after I put the ipod into restore mode, ran the "RUNME" I shift + click to restore with the new firmware an it gives me the 1604 error, so I dunno, I've read things about it, i've restarted 3 times, plugged it into a different usb port, same result. I assume I have to run the "RUNME" everytime I put it into restore mode, an then try again? I fail, haha. any help is greatly appreciated. *update, when I go to restore the factory firmware, it works*, so hmm..