We now know that Comex is working on an untethered jailbreak for iOS 4.2.1. Today, the iPhone Dev Team have unveiled a new video demonstrating an iOS 4.2 untethered jailbreak. An untethered jailbreak would mean that you don’t have to connect your iOS device to iTunes every time it reboots to regain your jailbreak. Comex has also confirmed that the new jailbreak would be out before Christmas or on Christmas.
Take a look at the video below posted by the iPhone Dev Team.