Finding the software is the first hurdle. It is rarely hosted on mainstream platforms like the Microsoft Store. Instead, you typically have to hunt for a Google Drive or Mega.nz link buried in the product description on Amazon or the official Magic Refiner website. There is no auto-updater; if a new version is released, you must manually find and download it again.
To update the keyboard's firmware:
: The keyboard features built-in flash memory (64k) to store your settings so they persist even if you unplug the device. User Experience & Community Feedback magic refiner mk21 keyboard software