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Please select a tutorial to unlock your iPhone 3GS 4.0.1.

Unlock / iPhone / 3GS / 4.0.1 / Mac

Posted April 25, 2012 at 3:50am
These are instructions on how to unlock your iPhone 4S, iPhone 4, iPhone 3GS, and iPhone 3G using SAM.
Posted November 28, 2010 at 11:55pm
Instructions on how to unlock the iPhone 4, iPhone 3GS, and iPhone 3G for use with any GSM cellphone carrier using UltraSn0w. This will work with the iOS 4.2.1 firmware on the 06.15.00 baseband.