@David-TP Thank you for useful information. It works now. Is there any formal release plan for this beta firmware? Thank you

Btw, network function of those wired device works normally.

Hi Sirs, I have 2 Deco X20, 1 TL-SG108 Switch, and wired devices(like Google TV, Laptops) And the configuration is "fiber modem > Deco Main > Switch > Deco Slave & wired devices" The Deco Slave and...