See the [build environment setup](https://docs.qmk.fm/#/getting_started_build_tools) and the [make instructions](https://docs.qmk.fm/#/getting_started_make_guide) for more information. Brand new to QMK? Start with our [Complete Newbs Guide](https://docs.qmk.fm/#/newbs).
## Bootloader
Enter the bootloader in 2 ways:
* **Physical reset button**: Briefly press the button on the back of the PCB - some may have pads you must short instead.
* **Keycode in layout**: Hold the mod key (lowest key on the right island) and then tap `R`.