Graphene already uses binary blobs (though one can disable them if they want). Info at [0].
[0] https://discuss.grapheneos.org/d/27068-grapheneos-security-p...
this isn't quite right. the blobs are produced by GrapheneOS and are reproducible once the source code embargo lifts.
this isn't quite right. the blobs are produced by GrapheneOS and are reproducible once the source code embargo lifts.