I think if you upgrade the firmware you may be stuck. I was going through my flight logs with Airdata and found the interference warnings started after GO4 v4.0.4 when I look at my log files, everything was acceptable and working with v4.0.4 At the moment I'm using Litchi, and I just got a copy of v4.0.4 apk that I will be installing on my phone and tablet, after uninstalling the current GO version