GMMK Pro Restores to Original Firmware from VIA

Minimal guide how to flash GMMK Pro keyboard from factory firmware to VIA firmware and vice versa.

Factory firmware to VIA firmware

  • Download VIA firmware
  • Download QMK Toolbox
  • Unplug your keyboard and reconnect it while holding the spacebar and B at the same time
  • You should see a message in the QMK Toolbox that indicates that your board is in STM DFU Bootloader Mode.
  • Load the VIA firmware and press Flash

VIA firmware to facttory firmware

  • Download factory firmware
  • Unplug your keyboard and reconnect it while holding the ESC (The official guide is wrong that tells you to hold spacebar and B)
  • You should see a message in the QMK Toolbox that indicates that your board is in STM DFU Bootloader Mode.
  • Load the factory firmware and press Flash

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