Sorry, Just notice,i only downgrade my main deco to firmware ver 1.3.1,i have 2 sub deco which still with 1.3.6 version of firmware,so far no connection or internet issue,do i need to downgrade sub...

Thanks,it work well after downgraded the firmware thru web ui.Thanks again

Thanks for your reply, can help to share link or tutorial on how to downgrade using web ui, sorry i’m not IT background. Thanks

After upgrade to this firmware,my deco m5 no internet, test speed using Speedtest app at hp result almost 0mbps: try to reboot deco and internet ok for few minute after that down again .Few thing...