See [build environment setup](https://docs.qmk.fm/build_environment_setup.html) then the [make instructions](https://docs.qmk.fm/make_instructions.html) for more information.
# Flashing the keyboard
The ErgoDone uses an HID bootloader rather than the Teensy one, and requires a different way of flashing the firmware.
1. While plugging in the USB cable, hold the two right-most keys on the top row of the left half of the ErgoDone to enter FLASH mode and flash a hex file.