Backup toolhead mcu firmware

[DenTechs]

Is it possible to backup the toolhead mcu firmware or otherwise acquire it from somewhere? i'm interested in performing this mod to my printer but I would like to be able to revert to stock operation in the future.

[MicroSur]

When you install an old version of the system with Klipper on the emmc, you will be able to make the corresponding version of the firmware for the toolhead.