now i Have a few questions thats to be asked. First. if i Jail Break my iPhone, can i unjail break it by updating? Second. i have a friend who has a jailbroken iPhone which is sooo annoyingly LAGGY if he updates his iPhone and un Jail break it (if possible from Q#1) would the Laggness go away? and 3rd. if i jail break my iPhone4S in specific would it get laggy? my friends iPhone is 3GS btw. last simple question. if i JailBreak how can i avoid these so called "Malware" or w/e you call it?