When I plug in my ATV2 via USB only and click restore, Itunes tells me "device cannot be found". It doesn't give any error number or anything...just this popup window with that message. Itunes seems to see the ATV, but it won't restore it. Any ideas how to fix this? I'm running Itunes 11 and the ATV is jailbroken with Firecore (atvFlash) from about a year ago...I'm trying to get back to factory Apple settings (un-jailbreak).