okay i jailbroke my iPhone 3G 2 months ago. i changed my status bar from AT&T to my nickname. the phone got slow from being jailbroken, then i restored and went back to official firmware. but it still shows my nickname on the status bar. so i want it back to factory settings because i don't want to get into problems with my phone and den Apple doesn't want to change it because they see that i jailbroked it.