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First of all, you should learn how to install a UF2 file into Raspberry Pi Pico by reading a section "3.2.1. From the desktop" (page 10) of this document:

https://datasheets.raspberrypi.com/pico/getting-started-with-pico.pdf

The following page is also helpful if you use Sparkfun Pro Micro RP2040:

https://learn.sparkfun.com/tutorials/pro-micro-rp2040-hookup-guide

See [[Microcontroller-boards-and-Keyboards]] for other available microcontroller boards and keyboards.

Let's try it!

  • 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

  • Drag and drop the uf2 file into the RPI-RP2 drive which BOOTSEL-mode RP2040 mounts

  • RPI-RP2 drive will disappear, after a few seconds, PRK DRIVE mass storage drive will automatically mount instead

  • Drag and drop your keymap.rb into the PRK DRIVE drive

PRK Firmware will automatically reload the keymap.rb. Enjoy!

Points you should know

  • Dragging and dropping keymap.rb does not unmount the PRK DRIVE 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 configuration should have been applied if there is no trouble with the keymap.rb
  • If your keymap.rb doesn't work, [[Debug print]] page may help you

Editing the keymap.rb

  • From the second time, you can overwrite the existing keymap.rb in the PRK DRIVE drive
  • You might be able to directly edit the keymap.rb in the PRK DRIVE drive though, to avoid unexpected trouble, we'd recommend you to edit the keymap.rb in your disk of the host computer then drag and drop it again into the PRK DRIVE drive

Upgrading PRK Firmware

When you want to install a new uf2 file of PRK Firmware, you have to reboot RP2040 into BOOTSEL mode.

See [[BOOTSEL mode of RP2040]] for more information.