Unlock iOS 4.3.1 on iPhone 4, 3GS With Ultrasn0w 1.2.1 [How To]
iPhone Dev-Team have just pushed UltraSn0w version 1.2.1 out to the public! This update does not add support for any new baseband versions it was updated simply so users on the iOS 4.3.1 firmware can use UltraSn0w to maintain their current unlock. Moreover this updated version of Ultrasn0w unlock fix signal bar issues on iOS 4.3.1 compatible iPhones, running on the old baseband.