I've tried using Greenp0ison. The 'loader' icon is white and won't open. I've tried using Sn0wbreeze 2.1...It makes the ipsw file but then itunes gives me a 3194 error...I was told to try adding '74.208.105.171 gs.apple.com' to the hosts files in Windows>Drivers>Etc>hosts...Tried it...Didn't work...What am I doing wrong? What can I do to make this work?