@Alexandre. Thanks again for the help, this wifiman app indeed good. The problematic deco A is now the main router. The Mac address with c4 is deco A and c7 is the working deco B. I took this...

@Alexandre. Thanks for the reply. Yeah I thought so too, and did extensive testing. But strangely, my new Sony A8H model managed to get 5ghz... So this is very troubling since s21 ultra also cannot....

@JoeBlow Any help? I now confirm if I turn off 2.4ghz, deco A will not serve any clients. Meaning it is not capable of supporting 5ghz. Is this hardware issue or some configuration to turn on the...

Hi there please help. I recently bought a twin pack deco x20. Connection is modem to deco A then ethernet backhaul to deco B. My devices plus deco all updated to latest firmware as of 15th Jan 2022....