Hi everyone, I really hope some can help me. I've recently purchased a Phantom 2 Vision Plus. I did the firmware update on both the Phantom and the controller. Took it out to the park, calibrated the compass, and was ready to "fly" ...I tried to go up with the Phantom but no go. I can hear the motors moving and it even increased as I push the joystick further up. What could be the reason why it wouldn't go up???