Downgrade iPhone Baseband 05.12.01 to 04.26.08

With the release of iPhone firmware 3.1.3 many of the iPhone unlockers lost their iPhone unlock capability because iPhone OS 3.1.3 updates baseband to 05.12.01 which is not unlockable ATM. In this iPhone guide you’ll learn how to downgrade iPhone Baseband 05.12.01 to 04.26.08 so that you may regain your unlock and use any Carrier [...]