iPhone 4 AT&T. Jailbroken and installed TetherMe to use on StraightTalk. When I go to Network Settings to change the APN Settings the options aren't there. When i tried to reinstall TetherMe it jams up and wont install so now i am trying a Factory Reset and it looks like it might be stuck because it has been taking about 15-20 minutes and is still on the rotating wheel. Any Suggestions?????