First of all i've upgraded my own P3A and everything went ok This afternoon my friend has asked me to help him to upgrade his P3A and after 23 min of all the d-d-d-d the leds on the phantom turned all solid red... and nothing, no noise, no red/green light on the gimbal. We shut down the P3A and tried again but the upgrade won't start, it's like it doesn't read the file from the card. Once again we have tried different cards and changed the battery. Nothing The worst of all we connect the phantom with the RC and the android phone, no signal from camera. The version of firmware is 1.3.20. We can fly the phantom but the gimball or camera doesn't respond :-( .