I have had my Deco network up and running for about half a year without any major issues. My main Deco is X1500, and I also have two X1500 satellites and also 2 old P9 units to offer better wifi coverage to difficult areas in my home.

Suddenly everything collapsed few days ago. There was no internet. Rebooting the main unit or the whole deco network didn't solve the problem. I verified that the main unit had an IP address from the internet service provider and I also tested the connections with an old router and the internet connection was just fine. It is and optical fibre connnection, 500Mbps and no problems there.

I thought that maybe I have a faulty main unit. Using the Deco app, I swappet another x1500 as a new main unit and tested again. Internet was still missing, and in addition to that, the new main unit could not connect to the satellite units. Same result when I tested with the third one.

Having lost my whole deco network, I also tried to factory reset all units, pressing the reset button about 15 secs and started the install from scratch. No impact.The main unit got an ip address, but there was no internet. And at the same time, an old router had a very good connection.

So far I tried to rebuild the network using the same name. Next step was to factory reset everything again and stard building a new network using a new name. This time one X1500 had very good internet connection, but it did not find any the satellites. I tried several times with no luck.

One of the P9 units also connected to internet and it also connected to one X1500 as a satelleite, but did not connect to other two X1500s, or the other P9.

This is where I am now, one P9 as the main unit and one X1500 as a satellite. Other units are more or less dead, only the blue light is flashing when I reboot them.

What happened in the first place? I did not change or update anything, the whole network just collapsed on its own. Firmware is the latest for all the units.

How can I solve this?