Once in iPhone screen you will see a big white OK, Quit Redsnow, and go back to GECKO, press LAUNCH button and vait about 30 or 40min untill software Bruteforces your password. iGnore any errors you see on screen, ignore that Gecko tool is frozen, just leave everything and depending on what passcode it is it will take some time, for example 0011 code takes about 5 to 10 seconds to break, 5555 pass