Hi Dennis,
mine doesn't do that. I'm still on the old 4b operating system. Haven't updated mine to 4c yet.

I haven't tried it yet with a module connected.

Hope I understood correctly.
On the GM page I set all the midi RX to off.

When I played the internal midifiles I received no sound. I then turned a couple of channels back on , ie drum & bass & they played.

I can try hooking up my sd2 module later today & see what happens ie if it plays the midifile.


My TX settings were not affected, they stayed as they should have been.


best wishes
Rikki