Jailbreak iPad 4.2 (4.2.1) RedSn0w 0.9.6b4 (Mac and Windows Guide)

Jailbreak iPad 4.2 - Shortly after the official launch of the new iOS 4.2.1, our friends from the iPhone Dev Team have released a new version of Redsn0w, the 0.9.6b4, compatible with it. Therefore, the iPad Jailbreak 4.2 is perfectly possible. Although it is the type tethered ...
Warning:

This method iPad 4.2 Jailbreak the rate is tethered , which means that if we run out of battery or turn off