My Deco X50 mesh system firmware was recently upgraded. Since then I have a very strange problem. I have the main X50 connected to another router, which in turn is connected to yet another router that is connected to the ISP. I have some units connected to the ISP-router, like my NAS.

On one of the satellite X50´s I have two wired units. One desktop PC and one PLC. After the upgrade I cannot access any of the wired devices from other WiFi-connected devices. I also cannot connect to the NAS anymore from any of the wired units, but no problem to connect from the WiFi units.

I can access the internet from the wired devices.

I have tested to run the Deco as both Access point (which I had before) and as Router, but no difference.

What can I do?