Reply To: Mission Engineering SP-H9 expression pedal AUX switch not working

[apalazzolo]

I have been running 5.8.5(1) with an SPH9 and have had no problems.  

I did not update H9 control to 4.0.  I can only guess that my firmware would have been updated if I had and that is how I avoided  the problem identified by lmcwilli.