Jailbroke my iPhone 4 on 4.2.1 with GP RC5 on Saturday. One of the first apps I downloaded was MakeItMine and FontSwap. I have been unable to change my carrier or banner, for some reason; not sure why. I even downloaded a different WiFi logo and that didn't work, either. FontSwap only works for my clock on my lockscreen, too...can anyone shed some light on this?