I have a iPhone 3g running 3.1.2. It's jailbroken using quickpawn. It's been fine for 6 months but now when I plug in my a/v cord and try to open any app, the app will start to open then it will return to the springboard screen. Once I unplug the cord it usually goes back to normal being able to open and run apps. I'm not sure if I updated something I wasn't supposed to in cydia? Hope someone can help. Thanks