CR-200b Pro source (Marlin)

[TrueLabInc]

Hi all!
Any ideas on how to get the Cr-200b Pro main board sources?
I found several shortcomings, one of the most unpleasant is that the filament cooling fan only works in 0 or 100% mode, i.e. on/off even if in gcode M106 S1, any value greater than 0 results in 100% fan power. I have the latest 1.0.6 firmware. Creality support has not been providing any results for many days now.

[ReneHezser]

If I am not mistaken, the configuration has to be made available, as the Marlin license requires this.
https://github.com/MarlinFirmware/Marlin/blob/bugfix-2.1.x/LICENSE#L38