Newest version of ultrasn0w unlocks iPhone 4, 3GS on iOS 5.1.1, RedSn0w 0.9.12b1 also releasedBy E. Alvarez, 06.04.2012
Redsn0w 0.9.11b1 now allows post-iPad 2 devices to downgrade to an older firmwareBy E. Alvarez, 05.11.2012
