I have an iPod Touch 2G (it says 3G in the 'About' section of my iPod, though... but iTunes and other applications on Mac OS X recognize it as 2G only) running iOS 4.2.1. I know redsn0w 0.9 won't recognize my iPod, so I want to downgrade it to iOS 4.1/4.0 and put greenpois0n on it. I'm trying to...