> For the complete documentation index, see [llms.txt](https://wiki.cbunmanned.com/wiki/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://wiki.cbunmanned.com/wiki/products-eol/cbu-cm405-fc-eol/firmware-build-files.md).

# Firmware Build Files

- [CM4](https://wiki.cbunmanned.com/wiki/products-eol/cbu-cm405-fc-eol/firmware-build-files/cm4.md)
- [ArduPilot](https://wiki.cbunmanned.com/wiki/products-eol/cbu-cm405-fc-eol/firmware-build-files/ardupilot.md)
- [hwdef.dat](https://wiki.cbunmanned.com/wiki/products-eol/cbu-cm405-fc-eol/firmware-build-files/ardupilot/hwdef.dat.md)
- [hwdef-bl.dat](https://wiki.cbunmanned.com/wiki/products-eol/cbu-cm405-fc-eol/firmware-build-files/ardupilot/hwdef-bl.dat.md)