Hi David, THANK YOU! This solved it - I honestly just thought they were up to date, because the app said so. Pleased this did the trick, and I think now the Deco M9+ will automatically update through...

@David-TP Thanks for getting back to me, unfortunately I completely missed the reply. I have now tried to manually power off the entire system and factory reset of my three Deco M9 Plus. However they...

@Gr8Dane update: my custom network/SSID is now available again, but I still have two of the Deco's broadcasting the rogue unsecured SSID and I don't know how to stop that, as it doesn't show up...

Hi, Lately our Deco mesh WiFi has been incredibly unreliable. Today, I suddenly can't connect to the SSID that the mesh is meant to broadcast, however instead there's two unsecured Deco default SSIDs...