I downloaded and updated my iPod last night. Now my it is asking me to plug it in and restore the iPod. Everytime that I plug it in and click to restore the iPod it fails. A few seconds after it seemingly begins the restore process, the screen on my iPod flashes and then goes blank. I am continually getting the error #1604. I've tried changing USB ports, restarting my computer, updating iTunes...nothing is working!