Might be a bit late in the day, but I’ve just noticed this thread. I have 4 Decos with the same firmware version as mentioned in the previous post. Over 30 devices connected via Wi-Fi or Ethernet....

Model : Hardware Version : Firmware Version : ISP : Anyone tried to delete a failed Deco from their app? I added a fourth Deco unit yesterday and the unit inexplicably failed in less than an hour -...

Had exactly the same issue. Emailed issue to support from the Deco app and within a couple of hours they had replied (pretty impressed). The advice was to swap one of the secondary devices for the...