Below is a step-by-step guide on how to unlock an iPhone 3G using ultrasn0w. In order to use ultrasn0w, you must have baseband 04.26.08…which means you need to be on the 3.0 firmware. Your iPhone also must be jailbroke in order to use ultrasn0w.
Note: T-Mobile USA users should disable 3G before using ultrasn0w [Read more…]