Unlock iPhone 4 & iPhone 3GS on iOS 4.3.1 using Ultrasn0w 1.2.1
A new version of the Ultrasn0w iPhone carrier unlock utility has been released with iOS 4.3.1 support. Note ultrasn0w 1.2.1 is not a new unlock and it will not unlock new baseband, but it does allow you to maintain your carrier unlock while upgrading to jailbroken iOS 4.3.1 using PwnageTool or Sn0wbreeze to preserve baseband. … Read More