If you have this firmware on your App will it run older firmware i.e. Tx 1.4.10 AC 1.5.80? If not is it possible to downgrade the App back to 2.7.0 as I have lost live feed from the camera since I must have inadvertently hit upgrade on my Ipad, unless DJI have sneaked in an upgrade as I have constantly ignored all upgrade messages since I bought the drone 3 yrs ago as it has worked just fine. Now on start up I get the camera feed for max 2 seconds then the App shuts down and goes back to the App icon, I have tried 3 USB cables and its the same, I know the camera works momentarily and the motors and gimbal respond normally.