That is probably one of the issues-- if you are running the DJI Go app and IOC on 1.2.6-- that will create some issues within itself. When DJI released that app update, and your IOS device installed it-- it may have updated your controller with 1.3.2-- which demands that the aircraft be updated also. I had some major connection issues with mine for the same reasons. May not be the cause of your issues -- but the GO app will create connection issues, especially when the controller and aircraft have two different FW versions.