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