How You can Downgrade iOS 4.2 to 4.1 / 4.0.2 / 4.0.1 on your iPhone 4, 3GS, 3G and iPad

Apple earlier today released the new iOS 4.2. As you have noticed when you get the iOS 4.1 or 4.0.2, this new iOS 4.2 at this time is not Jailbreakable. The reason why it can’t be Jailbreaked that it contain most of the new Baseband for almost all of iOS devices so, at the moment current version o

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