From the Hardware topic I found information that it's board made by CBD Technology.
Below Information that I wrote in the other topic.
I bet you can also just upload original firmware of CBD-Technology from their site.
I actually sent gcodes that were provided by CBD-Tech in their setup and.... It works!
You can changed max temp. settings, thermistor type etc.
and now my heat bead will not go over 50degC.
at the end use gcode M8500 to save values.
I attach txt files which is in fact gcode file provided by CBD-Tech with all codes available as well ass descriptions.
One of the files have more descriptions I took it from ChiTu F Plus version 4.0.5 documentation and translated by google translator.