1. Download MPD218 Editor
2. Open the reyrey.mpd218 preset (this is identical to Preset1-chroma10.mpd218 in the MPD218 Factory Presets).
3. File → Send To Hardware
4. Save current preset to hardware as 1
5. Click Send
6. Hopefully you'll never have to change the preset again(!)

1. Download MPC2
2. Open the Midi Learn pane (shift + command + L)
3. Click on the weird burger menu → Import

1. Import the mpd218-mpc2.xmm MIDI mapping
2. Under the User dropdown, select mpd218-mpc2

1. Import the mpd218-mpc2-ableton.xmm MIDI mapping
2. Under the User dropdown, select mpd218-mpc2-ableton

I've found the import functionality a bit ropy. You might want to do the following instead:

Drop mpd218-mpc2.xmm into ~/Library/Application Support/Akai/MPC/Midi Learn and restart MPC2.

Drop mpd218-mpc2-ableton.xmm into ~/Library/Application Support/Akai/MPC/Midi Learn and restart MPC2.