TA48312: Older Apple software downloadsLearn about Older Apple software downloads
Currently Being ModeratedJan 26, 2013 12:10 PM (in response to sirxtian)
I'm sorry, but Apple does not provide a downgrade path for iOS. Because downgrading is unsupported by Apple we cannot discuss it on these forums, but you can use Google to find information on how to install an older version of iOS on any iDevice.
Currently Being ModeratedJan 26, 2013 1:58 PM (in response to sirxtian)
Factory unlock (via carrier) should work with any iOS version. It does not need a downgrade.