I have connect my shield TV to the x3 55 pro though HDMI cable. When I choose edid 1.3 it only goes to 4k 30hz. Sometimes it can go to 60hz in 4k in edid 2.0 but it is extremely unstable. Most of the time when I choose edid 2.0 it only show me that there is no signal. I know it is the problem that the shield TV are not communicate with the TV when I switched to edid 2.0. But it is definitely something wrong with the TV software itself.