Ultrasn0w To Unlock iPhone 3G / 3GS On iOS 4.2.1 Is Now Available
How to resolve locked up jailbroken iPhone stuck in "recovery mode" (see pictures) | MacRumors Forums
question] iPod Touch 2G MC with iOS 4.2.1. How to do full system backup? I'm gonna go to a friend's house and use their W8 computer to jailbreak since USB passthrough on
iOS 4 - Wikipedia
How to Make your iPhone 3G or iPod Touch 2G with iOS 4 run faster « Smartphones :: Gadget Hacks
Tutorial: UltraSn0w Unlock for iPhone 4.2.1
iOS 4.2.1 Now Available For Download [Direct Links] - MacStories