If your keymaps become too convoluted and you wish to start over, look for the "Restore" or "Reset" button within the software settings gear icon. Alternatively, you can reset the hardware directly by holding down Fn + Spacebar for a few seconds until the keyboard flashes. Conclusion
Once configured, the software saves these settings to the keyboard’s internal flash memory (64k storage space), ensuring that customizations persist even when the keyboard is moved to a different computer without the software installed. WordPress.com Hardware Integration magic refiner mk21 keyboard software