Flame away but I've searched and the more I read, the more confused I get. I have a 3GS running 4.0.1. I have both a MAC and a windows PC running Itunes 9.2 so I could perform the JB on either. Looking to JB but from what I've read it appears I will need to downgrade to 4.0. Is this true? If so, where can I get the 4.0 OS? Also, is redsn0w the preferred program to use while jailbreaking? Is there a good tutorial anywhere on how to do so?