My transmitter on my P3 standard will connect to my DJI GO app initially but only for a few moments then it disconnects video feed. It is still connected to the Phantom but just not to the app. I tried resetting my wi-fi by turning the gimbal dial to the right and toggling the S2 switch. It will initial the sequence and the light on the transmitter flashes red, green but it continues to do so and does not turn to a solid green. Can anyone help with this? Also cannot get the firmware to downgrade.