iPhone Dev-Team has released the updated version 1.1-1 of ultrasn0w to unlock iPhone 4, iPhone 3Gs and 3G. This new update came up with more performance, stability and improvement. It will work with iPhones running on iOS 4.0.1 with 04.26.08, 05.11.07, 05.12.01 and 05.13.04 basebands. This new updated helps with standby battery timings and usage if your iPhone is using battery fast.
ultrasn0w upgraded to version 1.1-1 we’ve tweaked a few things that may help with standby battery life, you can upgrade via Cydia
You can follow the step by step guide posted here to unlock your iPhone with ultrasn0w so that you can use it with any carrier you like.
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