I have a 1.1.1 iPhone that I unlocked using carnival several months ago. It works perfectly. At this point I am using a Go Phone SIM with no problems. I couldn't see any advantage in moving to 1.1.2 but1.1.3 seems to have some cool new features. Can I go from 1.1.1 to 1.1.3? If so, do I upgrade through iTines and then use the tools offered here? Please point me in the right direction.