@fun @bart Something tells me Librephone are not working within the same parameters as PostmarketOS. I'm sure the former knows what SPI flash is and how to use it.
I mean, seriously... you expect an org like FSF to not break secureboot for the sake of research? lol
What I'm reading from Librephone is they are defining a breakaway platform that they hope will have a following with the ethical hardware brands that have been popping up. They don't need the sanction of secureboot, they can create their own system.
Edit: After listening to their announcement conf call, they are not producing a whole OS. They are only using AOSP as their reference for reverse engineering closed drivers (blobs). And they expect that whole-OS projects can make use of the resulting open RE firmwares.