As it was mentioned before, try to switch to Access Point (AP) mode. It should solve this problem, as temporarily solution before new update.

Try switch from Router mode to AP (access point) mode if possible. It worked for me and for some other guys, who had the same problem

@AndyNg Had the same problem after 1.4 update. Swtiched to AP mode, now everything works fine Maybe you should also try this (at least temporarely)

@Kevin_Z I'm kinda scared to change anything right now for Deco. Everything is working fine now, so I think, I'll stay with this sometime. As long as it works or good update comes

Hey guys, Like most people, after updating I was having lots of problems with Deco's. Non of them was working at all..... I tried lost of things, but finally after swtiching to AP (access point)...

@Potato55 I believe I found a solution, at least on mine it worked. I switched from router mode to AP mode and everything working normally again. So now I have: 1 router (bridge mode) - 1 router...