PwnageTool Bundle for iOS 4.2 Beta on iPhone 3GS (old bootrom) has been released. You can use this bundle to jailbreak your iPhone 3GS on iOS 4.2 while preserving your older baseband so that you can unlock it “later” (more on this below) using Ultrasn0w. The best thing about this bundle is that it supports hacktivation, but unfortunately, Cydia is currently not compatible with iOS 4.2.
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