for all the people that's stuck on the step where even though u already installed oktoprep and it tells you that you need to install oktoprep. When you are upgrading from 1.1.1 to 1.1.2 make sure you shift-click on check for update, not restore. If you shift-clicked on restore in order to get it to 1.1.2 the stuff you did previously, such as installing oktoprep, will all be gone. I don't know if this will help or not but I know that I made this mistake when I first started jailbreaking and it really frustrated me.
Also, even though you are suppose to close all programs that has ipod, itune or apple in their name before you jailbreak 1.1.2, i find that when i tried to do it recently, the jailbreak would only work if i left applemobiledevice on, i turned everything else off and if i leave applemobiledevice on, the jailbreak worked for me, but if i turned that off along with everything else, it would say cannot connect to ipod, please plug it into the computer (even though mine was plugged in at the time). It's not suppose to work like this, because before 1.1.3 and new installer and stuff came out, you were suppose to turn off applemobiledevice also, but idk with this new firmwire and installer, everything's been messing up and at least for me, it would only work with applemobiledevice still active.
Hope this helps