Ok. So I am running Windows 7 64bit. I installed iTunes 10.5 Beta 6 for Windows 7 (64bit). I was able to install iOS 5 GM with no problems on my iPhone 4. However, when I try to update my iPad 2 to the iOS 5 GM I keep getting a "unrecognized USB device" error message from Windows after the iPad 2 restarts to get ready for the restore. iTunes then tells me it failed. I was able to restore from my last backup with no problems so I am back to running 4.3.5. If I had to guess I would say that maybe iTunes isn't installing the correct USB device driver for the iPad 2, but that doesn't make sense because Windows has no troubles seeing the iPad 2 any other time. I might just wait for the final release of iTunes 10.5 to see if that does the trick, but I was curious if anyone else running Windows 7 (64bit) had this issue and if there was a fix? UPDATE: Problem (kinda) Resolved. See my posts below.