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"...However, once again, even for owners of existing 4K UHD TVs without built-in HDR compatibility, and no HDMI 2.0a, there will likely be available firmware updates or purchase options for external connection port boxes that incorporate the new HDMI standard and make HDR feasible in older 4K TVs..."

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Here comes HDMI 2.0a, a specification update for HDR support in 4K UHD content -

A ver si LG se pone las pilas...