[Pet_Ant]

Okay, but you could release the source code for the firmware, and only accept a signed binary blob. This would still be open source (GPL v2 compliant, but not v3 AFAIK) and auditable, but it still be conforming and certifiable.

[pabs3]

This is what the Intel Sound "open" Firmware does, and it is incredibly annoying.

https://github.com/thesofproject/sof/issues/5814

I don't think that would be GPLv2 compliant either:

https://sfconservancy.org/blog/2021/mar/25/install-gplv2/ https://sfconservancy.org/blog/2021/jul/23/tivoization-and-t...

[giantrobot]

And some manufacturers do just that. Many do not because they're sub-licensing components/code from other companies. Others don't because they want to license their hardware to others and firmware source is a special sauce when the functions of the radio are all in software.