Moog Grandmother firmware update

Hello all.

I just cannot update the firmware on my Moog Grandmother. Please talk me through this.

Many thanks. Error message reads Midi out port is being used by another appliance or something like that.

I don’t understand what it says.

Sorry…I forgot to introduce myself.

So “ Hello All..I am Pete, live in Australia, extremely old and have a Subharmonicon, DFAM and a Grandmother”.

Has anyone here on the forum had issues with trying to upgrade firmware with Moog Grandmother?

How did you resolve the issue?

Thank you in advance.