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There is a setting in the "General" settings options (it should be in the "Picture" settings) that is called "HDMI Ultra HD Deep Color. It is off by default and you have to enable it for each HDMI input. Once you enable it, it should work with 4k and HDR 10 bit. https://www.reddit.com/r/xboxone/comments/5cc3re/does_the_lg_50uh5530_not_support_hdr_despite/
Sorry, there was a problem. Please try again later.You have to go to tv setting and go to the general setting scroll down to hdmi ultra he deep color and hit yes for the hdmi and restart
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