How to Fix Error 1600 iTunes

Resolution

Custom firmware can’t be restored on a device with DFU Mode. Use Recovery Mode.

Downgrade A5 Devices To iOS 5.0.1 http://t.co/yEXxafDZ 2012/03/26“
Jailbreak http://t.co/5Q7VOU0S 2012/03/22“
Download OS X 10.8 Mountain Lion Developer Preview 2 direct link [update!] http://t.co/VFJvN2TA 2012/03/19“
Untethered Jailbreak Available For iOS 5.1 And iPad 3 http://t.co/kMAJECVd 2012/03/17“
Download OS X 10.8 Mountain Lion Developer Preview 2 direct link http://t.co/seV8Xqqd 2012/03/17“
How to downgrade Apple TV 2 firmware http://t.co/x9gcu647 2012/03/15“