Use the corresponding flashing guide for the keyboard MCU that you have.
For QMK/Vial firmware – Pro Micros
- Download and install QMK Toolbox from here
- Download your keyboard’s QMK/Vial firmware here
- Connect your MCU to your PC via USB
- Press the Reset Button on your keyboard
- Press the Flash Button on QMK Toolbox
- Wait for the success message before unplugging your MCU
- Repeat for each MCU (splits have 2)
For ZMK firmware – Nice!Nanos
- Download your keyboard’s ZMK firmware here and unzip the files, each half has a distinct firmware
- Connect your MCU to your PC via USB
- Put your MCU in bootloader mode, for Nice!Nanos double press the reset button, a USB storage device should show up on your computer
- Copy and paste the corresponding half’s firmware onto the Nice!Nano storage device the MCU created
- Repeat for the other half
If you continue to have issues, use the reset method below before attempting the above again.
Resetting Nice!Nanos
- Download the reset firmware here
- Connect your MCU to your PC via USB
- Put your MCU in bootloader mode, for Nice!Nanos double press the reset button, a USB storage device should show up on your computer
- Copy and paste the reset file onto the Nice!Nano storage device the MCU created
- Repeat for the other half
If you were in the process of flashing firmware, you may now do so at this point and follow the instructions above for your MCU.