En el manual del Samsung UBD-K8500 pone que debes activar el HDR en la TV. Por tanto deberá ser LG quien saque la actualización para que esa opción esté disponible.
This product supports the HDR function. (HDR: High Dynamic Range is a technique used in imaging to
reproduce a greater dynamic range of luminosity than is possible with conventional imaging devices.)
To take advantage of the HDR function, you need HDR content, a TV supporting HDR, and a high-
speed HDMI cable.
Connect the player to an HDMI input terminal on the TV that supports the HDR function using the
high speed HDMI cable.
Use the TV's menu to activate the HDR related function. For further information, refer to the TV's
user manual.
http://downloadcenter.samsung.com/co...00-ZA_1203.pdf