It's a MIDI keyboard controller with a ton of programmable knobs, it comes with some editor software to edit these knobs with up to 12 presets on it, downloadable on M-Audio's website, only available on Windows and MacOS. Here we try to reverse engineer that preset editor software…

There's 4 ports available:

amidi -l

Dir Device    Name
IO  hw:x,0,0  Code 61 USB MIDI
IO  hw:x,0,1  Code 61 MIDI DIN
IO  hw:x,0,2  Code 61 Mackie/HUI
IO  hw:x,0,3  Code 61 Editor

The last one in particular is used by the preset editor.

SysEx messages generally have the following format:

⇒ sent to keyboard

⇐ reply from keyboard

On Linux, try amidi -p hw:x,0,3 -S '<message>' -d

The LCD says SYS for a second for most of these commands.

⇒ f0 00 01 05 7f 31 06 6d 00 01 01 f7

Other messages seem to not work until this one is issued. Last byte set to 00 seems to lock it and 01 (or anything else up to 7f) unlocks it.

⇒ f0 7e 7f 06 01 f7

⇐ f0 7e 7f 06 02 00 01 05 31 06 31 30 34 34 f7

Manufacturer ID (00 01 05) and model ID (31 06)

⇒ f0 00 01 05 7f 31 06 62 nn f7

⇐ f0 00 01 05 7f 31 06 63 0a 3b nn [xx xx xx xx xx xx] … f7

nn is a preset number between 01 and 0c, or 00 for RAM
xx is a 6-byte ASCII preset name

⇒ f0 00 01 05 7f 31 06 61 0a 3b nn [xx xx xx xx xx xx] … f7

⇒ f0 00 01 05 7f 31 06 6b 00 02 nn nn f7

⇐ f0 00 01 05 7f 31 06 6c 00 04 nn nn xx xx f7

nn: setting address (00 00, 00 04-00 10)
xx: value

⇒ f0 00 01 05 7f 31 06 6a 00 04 nn nn xx xx f7

• https://github.com/ahlstromcj/midicvt/blob/master/contrib/sysex-format.txt