I’ve had a working mesh network based on 3 Deco M9 Plus devices for 6 years. So I thought, why not upgrade to more up to date devices. A bit of research later, and I bought a Deco XE75 Pro 3-pack....

@ImtiazAli Network setup is as follows: Cable broadband router connected to the internet. Router is not in modem mode, but wifi on router is turned off and main Deco is connected to the router via...

@ImtiazAli OK, I tried again, as you have suggested, and it is still a no go. To be absolutely certain that I am still missing the blindingly obvious, I have some questions: Firstly, the utility,...

@ImtiazAli Thanks for the quick reply. So, just to confirm, you are suggesting that the main Deco is kept connected to the internet via its cable connection to the router, and via wifi to the rest of...

@ImtiazAli I followed the instructions provided with the update utility. I even had the update .BIN file in the same folder as the utiilty program. I isolated main Deco from the internet at the rest...

Alexandre. wrote @retired_user I think you should just try. The whole point of that utility is to update M9 Plus V2 with firmware 1.2 to newer firmware. @Alexandre. OK. Against all my training, and...