Can somebody please provide me with some instructions? I don't understand how to jailbreak it AGAIN with greenp0ison. I jailbroke 4.1 in november 2010 when there was that whole fight between greenp0ison and limer1n. So right now I have ios 4.1 with greenp0ison jailbreak. Now I want to upgrade to iOS 4.2 and I don't know the process. Do I just use itunes to upgrade to 4.2 and then download new greenp0ison and run it? Thanks!