Firmware GMMK Pro ISO with via support

All credits goes to Peep and his guide available here :

The only real value of this page is to provide a firmware already compiled : download.
Just flash it with QMK toolbox.

you will need to load the iso layout (made by inffy from the glorious discord) separately in order to have a json layout with VIA :

for reference, here’s the keymap.c file :