Just throwing this out there…
I’ve pushed up a very early release of my firmware image for Glowforge units with a factory control board.
The image boots to a basic Linux install, with support for wireless. It doesn’t do anything else, yet. Running it requires you to install the microSD slot and have access to the serial port.
Would be nice if some people would be interested in collaborating, as it gets old just working on this stuff by myself.