I was trying to downgrade my iPod Touch 3g from iOS4 to 3.1.3 to possibly jailbreak again, but when I started downgrading, iTunes had an error and my iPod is stuck like this: Please Register or Log in to view images None of the buttons respond and when I connect to iTunes, it doesn't show any devices. Doesn't even show up in windows. my ipod is UNJAILBROKEN. Help???