Mbot grid II+ firmware

Is this Mbot Grid II+ firmware fully propietary or is it based to some opensource firmware? I noted that Octoprint software is compatible with Marlin, Sprinter, and Smoothie so any ideas is it compatible with Mbot? Reason why I ask this is that OctoPi (rasperry pi printer host http://octoprint.org/download/) will give nice remote control for printer and that why I am interested if Mbot is compatible with it.

Have you looked here?

So that Mbot firmware is sailfish or that device is just sailfish compatible?

I think just sailfish compatible.