@PauloMS 

What is the current light status of the 3 Deco? Are they all solid green? 

With modem connected to the main Deco only, please connect your computer to the main Deco and test whether you can access internet; then click here to check its IP address and default gateway. 

Meanwhile, what is the current internet IP address and gateway obtained by the main Deco? You can find them via  the Deco app. 

Besides, try to reboot the modem and all the Deco units to give it a go. 

Thank you for your help.  All the Decos were on 'green' however, problem solved.  It seems that the update had changed the internet source from my modem to Deco's own.  When I delved down and found the switching choice and changed back to 'bridge modem', all started to work fine.

Kind regards.  

@PauloMS 

Glad to hear that it was resolved finally, thanks for your feedback.

Any further problem, do not hesitate to contact us.

Wish you enjoy the internet with the Deco nodes. 

Found today, 2 days after doing update, one of my M5s was showing offline/disconnected from other M5s.

Soni unplugged, waited approximately 10 secs, plugged back in, and it now looks completely dead. No light coming on.

@Steveg 

Hello, what is the firmware version you installed?

Try to reboot the Deco M5, or change another socket to plug it;

You can hold the reset hole for 1s with the Deco powered on and verify whether it works.

Besides, may I know when did you buy this Deco M5?

Good day.