Have tried to turn on SkyQ 2160 resolution, with my Sony KD-55X8505B connected, but just get a blank screen which then resets back to 1080 HD. This happens for both 10-bit and 8-bit colour settings and for all 4 HDMI inputs. On the SkyQ box I get the error message UH031 for HDMI inputs 1 & 2, and error message UH011 for HDMI inputs 3 & 4.

My understanding is that HDMI inputs 1& 2 are the only ones that support HDCP 2.2. The error message for HDMI inputs 3 & 4 I think relates to a problem with HDCP 2.2 being absent.

I have tried my TV connection via my Yamaha RX-A3050 (which supports HDCP 2.2) and with a HDMI cable (supplied together with the SkyQ box) directly but get the same blank screen and error message.

The TV was just this week upgraded to the PKG3.001EUA operating system with no improvement in the 2160 support.

Have called and emailed the Sony support centre numerous times. Their only suggestion was to reset the TV back to factory settings but this did not help.

Has anyone else experienced a similar issue? Any further suggestions?