Hey, I'm having a weird issue with this, I've tried doing the steps and here is what has happened to me, i run redsn0w and get the missing keylist error, i've downloaded two ipsw files (one for 6.0.1 and one for 6.0.0 after determining which ones were needed depending on the model number) I tried using the 6.0.1 ipsw file and it says incompatable with redsn0w, but it reconizes the 6.0.0, so i jailbreak it using that ipsw and it goes through the process of installing then gets stuck at a repeating "please wait" for about 10-15 minutes then reboots, no cydia to be seen, i shut it off and try to boot using the remaining steps and the screen comes up with a pineapple for about 5-10 minutes, then restarts and comes up with the normal apple icon and then nothing, no cydia installed or anything
EDIT: Nevermind, I am a complete idiot, turns out I was using the wrong ipsw. I was using the one for just the normal iphone 4 when I should have been using the one for the GSM model