OLED TV support of 4K Genie HDMI signal - DirecTV

I currently have a LG 49UB8500 According to it's specs, it's a 4K, 60hz HDMI 2.0 television. The 4K Genie will not send a 4K signal and says it is not supported on any of the HDMI inputs of the TV. The Genie is connected directly to the TV without a passthrough. That leads to concerns that there are 4K tvs and then there are 4K tvs that are different. Can I fix this problem?
If not, and I need to get either a different 4K TV or a different signal source, I would like to know if any of the LG OLED TVs support the Genie 4K signal.

This question, "OLED TV support of 4K Genie HDMI signal," is about DirecTV channels, programming, equipment, and sports.

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