My good friend gave me his P330 Phantom 1 very little used drone as he could not get it to arm. I've got the Naza M assistant loaded and the copter connects and control sticks move the sliders to 1000+/-, and the motor checks are all good. Copter boots up fine and presents flashing green lights, but executing arming gestures fails to arm the motors. Done compass & transmitter calibrations, did manual bind with the board button, and checked cables In the Copter......still no arming. Suggestions would be greatly appreciated!!!