if fritz!box tools is stuck in setup_retry after the box pulled FRITZ!OS 8.51, its the mesh role. the box now reports itself as "unknown" and the integration only knows none/master/slave, so the coordinator falls over and every entity goes unavailable
reload and HA restart do nothing. a custom copy of the integration that catches the ValueError gets it loading again. putting the box back as mesh master and re-pairing repeaters might fix it too, not confirmed
reload and HA restart do nothing. a custom copy of the integration that catches the ValueError gets it loading again. putting the box back as mesh master and re-pairing repeaters might fix it too, not confirmed