CEC control of Fire TV 4K sticks using the "Crestron Certified Drivers Video Server CED v1.1"? has been rock solid for me.? In one configuration I have the FireTV 4K installed in a DMC-4KZ-HD in a DM-MD8x8 and another directly in a DM-MD6x4.? ?I have noticed that if FireTV 4K does stop responding, you need to power cycle the FireTV 4K stick to get it to respond.? I use up, down, left, right, select, exit, home, and menu.
