Tutorial

First of all, you should:

• Be knowledgeable how to install a UF2 file into Raspi Pico on https://www.raspberrypi.org/documentation/rp2040/getting-started/#getting-started-with-c
  • https://learn.sparkfun.com/tutorials/pro-micro-rp2040-hookup-guide will also be helpful if you use Sparkfun Pro Micro RP2040

Use a release binary

• Download the newest release binary from Releases

• Unzip it. You should get a file that looks like prk_firmware-0.9.0-20210910-xxxxxxxx.uf2

• Flash the uf2 into RP2040 in BOOTSEL mode

  

• PRKFirmware mass storage drive should be mounted, then drag and drop your keymap.rb

  

The PRK Firmware will automatically reload your keymap.rb. Enjoy!

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Tip: RP2040 in which PRK Firmware is already installed can reboot to BOOTSEL mode by double-pressing the RESET button without detaching the USB cable.

Points that beginners are likely confused

• Dragging and dropping keymap.rb does not unmount the PRKFirmware drive
• Reloading keymap.rb takes five to seven seconds depending on the keymap.rb and the circuit
• It looks nothing happened even if a new keymap.rb was successfully reloaded especially in case your keyboard doesn't have RGBLED on it. But the new keymap should have been applied if there is no trouble with the keymap.rb
• If your keymap.rb doesn't work well, Debug-print page may help you