I know there's other topics, I've looked at them and nothing seems to be working for me... My iPod was in version 1.1.4 or 1.1.5 and was jailbroken, I bought it off someone on ebay. I tried to update it to 3.0 and now it's giving me the 1604 error... I've tried to use ziphone (is it?) to put it in DFU mode but it just doesn't recognise the iPod Touch... I've tried all the things apple tells me, change computer, user, usb port.. everything nothing seems to be working.. All it shows on my iPod is the "Connect to iTunes" with the iTunes logo and a USB picture. Again, I've looked at other posts before I became a member on this forum, I've looked at youtube.. Countless of videos, no ones solutions seem to be working for me... Please, please help. edit: I'm running windows XP and the latest version of iTunes, I want to go to 2.2.1 OS for my iPod..