The most vocal member of the iPhone Dev Team, MuscleNerd, has confirmed that the much awaited unlock for iPhone 3GS & 3G (all basebands) on iOS 4.2.1 will be released this Sunday with a new Ultrasn0w update!
It seems like Apple has created yet another obstacle for jailbreakers and unlockers with the introduction of a baseband requirement for iOS starting from the newly released iOS 4.2.1 firmware. As Reported by Semaphore, the creator of the popular TinyUmbrella program was the following.
The iPhone Dev Team has released new information regarding iOS 4.2.1 jailbreak and unlock situation, which is as follows.
iOS 4.2.1 was released yesterday for iPhone 4, 3GS, 3G, iPod touch 4G, 3G, 2G and iPad. Even though iOS 4.2.1 jailbreak is possible via Redsn0w 0.9.6b2, but Cydia is still broken which makes the jailbreak pointless for many. It also contains new baseband for all iOS devices which currently makes it impossible to unlock using existing version of Ultrasn0w. So if you upgraded to iOS 4.2.1 and now want to downgrade back to iOS 4.1 / 4.0.2 / 4.0.1, follow the instructions posted below to downgrade iOS 4.2 on iPhone 4, 3GS, 3G, iPod touch and iPad to iOS 4.1 / 4.0.x.
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