If you're an iPhone 4 owner or 3G[S]user eager to upgrade your OS but you use your iPhone on a non-AT&T carrier, good news: The iPhone Dev-Team just released the ultrasn0w 1.0-1 unlock for the iPhone 4 baseband and several of 3G and 3GS baseband versions. This video walks through the relatively simple unlocking process. As always, proceed at your own risk. [Dev-Team Blog via Engadget]
Unlock Your iPhone 4, 3GS, 3G With iOS 4 For Other Carriers
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