Loss of sound from one of your Beolab 8s is same issue I’ve been having with 28s, coinciding with latest software update (cause or coincidence I don’t know). Has happened a few times over the last few days, sometimes sorted by unplugging the dud speaker, sometimes needs more. Doesn’t seem to need a factory reset thankfully, but I’d rather it doesn’t happen at all. One theory someone had was it could be triggered by regular searching for better wifi, but I’m not sure.