Problems with new Apple TV 4K HDR doesn’t work

I have the problem with the Sony KD-75ZD9 and the Yamaha CX-A5100. Both work with HDMI 2.0a and both can 4K with 60HZ and also 4:4:4 the Apple TV does not work it says it’s no HDR only SDR. Oppo works fine. When gives it an correcting Firmware update for the Apple TV 4K so that’s useable? I have read an other post with the same combination. Direkt to the tv it works. But oppo over the Yamaha also works with same feature.