I just had my receiver installed this past weekend and I can't figure out what should be a simple operation. Once I switch to AppRadio mode, it seams there's no real way to quit out of it. I can double-tap the home button to get to the main source screen, but as soon as I select a different source, it jumps back to AppRadio mode. If I quit it from the iPhone, it just goes to a black screen. It seems like there should be an easy way. The only thing that has worked is unplugging the 30-pin connector and plugging it back in. Not too safe while driving.