C1 & C2 buttons stopped working

[Duse]

just out of the blue they dont work anymore.changed setting to do different things and still nothing. shutting down MP and RC did not help.The only thing it does is beep when pressed.Any advice??

 

[Top Hat]

Refresh FW?

 

[Logger]

Try cycling in and out of fixed wind mode. Might help.

Settings > Remote Control Settings Uncheck "Configure Fixed-Wing mode".

 

[Mavman]

Related but different - at some point my ev +\- readout stopped working on all phones / tablets... I'm not upgrading them, still on .400

 

[Duse]

I shut everything off for a 1/2 hour ,turned everything back on,and while checking firmware CPU overload came on then went out (dedicated Ipad air 2) Then everything went back to normal.Which is cool,but still wish I knew what the cause was so it can be avoided