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. You will have to use SSH (OpenSSH) to copy or install any files manually on your iPhone.
iOS 4.2 was released earlier today. Just like iOS 4.1 and iOS 4.0.2, the new iOS 4.2 at the moment is not jailbreakable. It also contains new baseband for all iOS devices which currently makes it impossible to unlock using existing version of Ultrasn0w. So if you rely on a jailbreak and unlock, stay away from this new firmware until new jailbreak and unlock tools are available for download.
Well well.. it was only a few days ago when MuscleNerd of iPhone Dev-Team confirmed that Comex will try and jailbreak iOS 4.1 using another userland exploit, if not then we will have to wait for a low-level bootrom exploit which may take longer to release. And now, while replying to a Twitter user, Comex has confirmed that the next iOS 4.x jailbreak may not come from him.
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