dklawren No, if you selected to lock OEM during the setup wizard you will have to wait for an updated alpha and then sideload it from recovery, that is the only option, because of signature requirement and rollback prevention. This is a very serious and critical bug that affects everyone who has used stock Android 15 and tries to install any GrapheneOS version, even current stable (or so I heard). So GrapheneOS developers will definitely try to get a fix out very soon, within the next three days I would guess.