1. Download QMK toolbox in the Github page.

Releases · qmk/qmk_toolbox

For Windows get the .exe file extension:

For Mac choose this:

1. Click Yes to install drivers in your device. A command prompt will open then wait for it to close on it’s own. If there is no prompt that showed up you can press Ctrl+N to install manually.

1. Click open then select the firmware file you want to flash.

1. Plug in your keyboard then press the reset switch (this is usually at the back of the PCB) to put the keyboard to DFU Mode. You will know that you successfully entered DFU mode when a yellow line shows up in QMK Toolbox.

1. Click Flash and make sure you don’t unplug the keyboard during the flashing process doing so may brick your PCB.

Once the flashing process is done you can close QMK Toolbox.