I’m looking at the keyboard firmware code for the pocket keyboard and as far as I can tell it should still support the exact same xWBIT command that the kbdgfx.c for the regular reform sends.
The one thing I did notice though is that matrix_render_direct requires the first byte sent in the buffer to be 0x40, while on the original mnt keyboard that requirement is not there, and there’s a FIXME in the code about it. So if we modify kbdgfx.c to include that byte at the beginning it’ll likely work. But this really should be fixed at the firmware level ideally so that both have parity.
I quickly hacked up a version of kbdgfx.c to add that but I don’t have a Pocket Reform to test it on if you want to give it a try: Pocket Reform KBDGFX.C Test Fix ($8) · Snippets · GitLab