Cannot set YCbCr/RGB 4.4.4 10Bit in 2180p

[omega3]

Hi all, I have an Himedia Q10 Pro running latest Android 7 firmware.

As the title says, when I set video output to 2180p @ 60 (but even 50 or 25 hz),  I'm locked to YCbCr 4:2:2 in Advance Settings; every other option returns me a "not supported" message. I've tried with YCbCr 444 10Bit,  YCbCr 444 8Bit, RGB 444 10 bit, RGB 444 8 bit,  YCbCr 420 10Bit, YCbCr 420 8Bit. They are all unsupported.

My System:
TV:  LG OLED 55B6V (It does support 4K @ 60 Hz @ 4:4:4)
AVR: Denon X2300W ( 4K/60 Hz full-rate pass-through, 4:4:4 colour resolution, HDMI inputs with full HDCP 2.2 support)
MediaPlayer: Himedia Q10 Pro

The Q10 Pro is connected to AVR using the original hdmi cable inclused in the himedia box.

Any advice?

[Fa.Ch]

As I can remember HDMI 2.0 does not support 4:4:4: 10bits @60HZ


HDMI 1.4 supports 8bit RGB, 8bit 4:4:4 YCbCr, and 12bit 4:2:2 YCbCr, all at 24-30 FPS
HDMI 2.0 supports RGB and 4:4:4 in all color depths (8bit-16bit) at 24-30 FPS
HDMI 2.0 only supports 8bit RGB and 8bit 4:4:4 at 60 FPS

http://blog.toonormal.com/2014/01/10/4k-hdmi-and-deep-color/

[omega3]

As I can remember HDMI 2.0 does not support 4:4:4: 10bits @60HZ


HDMI 1.4 supports 8bit RGB, 8bit 4:4:4 YCbCr, and 12bit 4:2:2 YCbCr, all at 24-30 FPS
HDMI 2.0 supports RGB and 4:4:4 in all color depths (8bit-16bit) at 24-30 FPS
HDMI 2.0 only supports 8bit RGB and 8bit 4:4:4 at 60 FPS

http://blog.toonormal.com/2014/01/10/4k-hdmi-and-deep-color/

Do you think it's a matter of cables?

All of my devices (tv, avr and q10 pro) do support HDMI 2.0a.

Maybe the cables are only 2.0

[cany]

I had to turn on "HDMI ULTRA HD Deep Colour" (under General) on my LG TV for the connected HDMI Port first, before i was able to successfully select 10bit on Q10 pro.

[omega3]

I had to turn on "HDMI ULTRA HD Deep Colour" (under General) on my LG TV for the connected HDMI Port first, before i was able to successfully select 10bit on Q10 pro.

yes, thank you very much.

That solved my problem.