Okay, so I've been set the task of jailbreaking and unlocking my friends US iPhone which was bought with 1.1.1 installed. He promptly installed 1.1.2 after he bought it rendering it pretty damn useless. I've attempted to downgrade the firmware through iTunes, via the Option-Restore method but I keep getting the error message below. Any help please. Also, the phone has never been activated. UPDATE: I've been trying to downgrade for the past two hours and all I'm getting is the error message shown in the third attachment. I'm now honestly thinking this phone is completely bricked.