Try This
This will sound pretty stupid and I can't explain it but it has got to be worth a try. My Itouch seemed ruined by Error 1600. In desperation, I blew hard down the plug socket, reconnected it to the usb and it fired up. After a while it crashes but by blowing hard down the opening(mouth around the Ithouch) it fires back up.
Maybe this will help or someone could explain why it half works.