In my case when I got new airfiber connection installed I am getting error of low video quality detected in stb and error of airfiber router status so i raised ticket for same, engineer came and solved router status issue by making new connecter but stb low video quality error was not getting solved so engineer called THD From THD End It was not solving so engineer called area distributor head I talked with him he said he is raising request of stb chnge and change immediately but still same error coming so No Solution Of These Such kind of errors , Sometimes Erros comes and goes