Ok, as in the question I have a itouch 2g 8GB MC Model currently on 4.2.1 iOS. I know how to downgrade already, and I know I will have too, but is there ANY jailbreaking programs out there that I can use? I've tried the GreenPois0n RC4 and when I try putting it in DFU, it will NOT work. I've tried every trick on trying to put in DFU, and sometimes I think it is in DFU 'cause it won't turn on, and itunes won't read it. And when I open up Greenpois0n it shows the cmd and it says "ERORR:" and some other stuff. Any advice,tips, or answers?