Hi, My setup is zidoo x9s connects to denon avr6400h then output to JVC RS520 Projector. the problem is it always connects in 1080p60 mode. I tried factory resetting and change color mode to 4:2:2, no use.However using the exact same setup(including HDMI cable), if I swap the x9s with Roku 4k streamer or oppo 203, both connects in 4K mode just fine. Can someone help me? Thanks!
