Usually you can't load your own SoF firmware, on most hardware it has to be signed by Intel, with exceptions like Chromebooks, where you have to sign it with a

Usually you can't load your own SoF firmware, on most hardware it has to be signed by Intel, with exceptions like Chromebooks, where you have to sign it with a "community" key that is publicly available. There was talk of a way for device owners to add keys, but that isn't implemented yet. https://github.com/thesofproject/sof/issues/5814 https://github.com/thesofproject/sof/issues/5814