![Ultrasn0w 1.2.1 Unlock for iOS 4.3.1 Coming Today[MuscleNerd Confirmed]](https://thetechjournalcom-asifbd.netdna-ssl.com/wp-content/uploads/2011/04/ultrasn0w.jpg)
Ultrasn0w 1.2.1 Unlock for iOS 4.3.1 Coming Today[MuscleNerd Confirmed]
MuscleNerd has tweeted that an updated version of Ultrasn0w would be released tonight. The unlock 4.3.1 will be compatible with iPhone 4 and iPhone 3GS. Using this update, users will be able to first upgrade to 06.15 Baseband and then would be able to downgrade to 05.13 Basebands. This surely is an important update as users on Basebands 05.14, 05.15, 05.16 don’t have any Unlock available till now. These users would be able to update their Basebands to 06.15 and then can downgrade to 05.13 for an Unlock.
![Unlock iPhone 3G(S) on iOS 4.2.1 with Ultrasn0w and Redsn0w[How To Guide]](https://thetechjournalcom-asifbd.netdna-ssl.com/wp-content/uploads/2010/11/iPhone-3GS-Unlock.jpg)
Unlock iPhone 3G(S) on iOS 4.2.1 with Ultrasn0w and Redsn0w[How To Guide]
iPhone Dev Team has already released UltraSn0w 1.2 to unlock iOS 4.2.1 on iPhone 3G, 3GS using Reds0w and Ultrasn0w.Here is the step by step guideline to unlock iOS 4.2.1 on iPhone 3G, 3GS using Reds0w and Ultrasn0w.
