All Roku devices support ECP.
I've verified some ECP commands work;
/query/apps, /launch/app, etc.
However I need to switch to FIOS STB. My 3 HDMI ports are 1: STB 2VD 3:Roku. using /keypress/HDMI1 has no affect. BTW TV is a 2016 model Samsung.
Thanks
Those commands only work on a true RokuTV. Certain ECP commands only work on RokuTVs. "1-touch play" under Settings->System->Control other devices is supposed to get your TV to switch to the input the stick is using, but I don't know if it works for all TVs. There's no way to get a Roku device to change your TV's input to any other input.
Thanks for the clarification, Seems I'll be out of luck.....