I just got my Razr Maxx and I want to root it. I've looked at the sticky and have everything downloaded and I'm ready to go, but I have some concerns. Is it possible for me to backup the phone as it is now so that in the event that something goes wrong, I can recover what I originally have/had. I like the factory OS. Does the process in the sticky only give me root access, or will it change my OS also?