Just upgraded the firmware to version 1.3.20 on my Phantom 3 Advanced. Also did upgrade the RC and extra batteries. Logfiles reportet success on all. After upgrade I did a IMU-calibration, gimball-calibration and RC-calibration. Did a normal preflight rutine, put the Galaxy 6 in Flightmode, check batteries, calibrate compass, checked RTH hight and so on.. As I was getting ready to take off, I got "disconnected" in the Pilot app (v1.2.0 - Android) Restarted the app, and everything appeared to be ok. Auto-takeoff, hoovered nicly, no drifting. Never had any problems with v1.2.8 either. Did a short test-flight around the cabin, elevation aboat 40 meters, range about 60-70 meters. Started to approach home, and when the bird was 15-20 meters away, I got "Diconected" again !! After another app restart, it appeard to be working. Landed the bird safely. Any issues with v1.3.20 and the Pilot App ? When i first installed the Pilot App, i noticed there where a lot of menues/settings that where changed/removed after i connected the RC and P3A. I assume that the Pilot app is genecic, and will recive config from the RC and Phantom. Should I removed and reinstall the app after FW-upgrade ?