I'm a new owner of a P2V, and have updated the firmware of the Phantom and the camera. I am now attempting to update the controller, however the Phantom2 assistant software reports that the controller is not detected. I have opened the controller (4 screws) and attached it via the USB cable from the internal port to my PC, but the software just doesn't see it. I tried it both with the controller powered on and with it off. What am I missing? Thanks!!