after installing firmware update 4.30.10 the lg cx or c10 now supports 4k 120Hz Dolby
Vision gaming from the xbox series x but did you know there are at least six new features that
were not mentioned in the firmware release notes which didn't even mention 4k 120Hz dolby vision
gaming in the first place the first feature is that dolby vision game mode is now more accurate
on the previous firmware version of 3.23.35 if i reset my calibrated dolby vision game mode
so that the default out-of-the-box picture settings are restored you can see that once
i go into the white balance sub-menu the default color temperature is medium which is far too cool
introducing a blue cast to everything on screen however on the latest firmware of 4.30.10
if i reset the picture settings in dolby vision game mode and again go into the white balance
sub menu to check you can see that the default color temperature is now warm too
which is much closer to the d65 white point used within the film and broadcast and increasingly
gaming industry the second undocumented feature is that AMD Freesync premium and dolby vision are
no longer mutually exclusive on previous firmwares prior to 4.30.10 engaging amd freesync premium on
any hdmi port would disable dolby vision for that input as you can see once i got out from the user
menu of this lg cx and then went into the 4k tv details information screen on the xbox series x
dual vision support would be removed once amd freesync premium was engaged
this has changed with firmware 4.30.10 even after i enable amd freezing premium on an hdmi input
i could still get dolby vision even up to 4k 120hz judging from the xbox information screen so you
might as well leave amd freesync premium engaged at all times undocumented feature number three is
that lg has fixed the freesync information bar to correctly display the hdmi 2.1 frame rate
previously 4k 120Hz games would for some reason be reported to be running at 5.5 hertz
give and take but after installing firmware 4.30.10 the fluctuations close to 120hz in vrr
mode would be accurately reported by the freesync information bar which if you are not already aware
can be summoned by quickly pressing the green button on your lg magic remote multiple times
while on the subject of pressing buttons on your remote control undocumented feature number
four is that you can now turn off the no signal message on a blank source input allowing you to
see a series of beautiful screen savers without an annoying message floating about on screen
to hide the no signal message simply press the red button on your remote control on a blank
input and to bring back the no signal message just press the red button again undocumented
feature number five is that lg has increased the default light output in sdr filmmaker mode
on previous firmware versions the default oled light in sdr filmmaker mode on the lg
cx or c10 oled has always been 25 as proven after resetting the picture settings in filmmaker mode
which delivered around 80 nits peak wide for sdr or standard dynamic range content perhaps due to
too many complaints from owners that filmmaker mode is too dim lg has used firmware 4.30.10 to
increase the default oled light value in filmmaker mode to which resulted in a peak wide close to
200 hits which is similar to the default light output on samsung televisions in filmmaker mode
while this brighter filmmaker mode may appeal to some users if you are a video file who prefers
to watch in reference sdr conditions you can drop oled light to 35 which delivered a peak weight of
100 hits on our 48 inch lg cx sample i measured my unit before and after installing the new firmware
and didn't detect any significant difference in near-black gamma tracking or hdr peak brightness
the graphs with the new firmware version of 4.30.10 appeared marginally brighter overall
because by that time the oled panel had heated up so much from undergoing so many measurements in
different picture modes sdr filmmaker mode hdr filmmaker mode hdr game mode dolby vision mode
what happens when black frame insertion or bfi was engaged all with 56 point grayscale measurements
and more some of you previously complained that i wasn't doing enough firmware analysis on the lg
cx or c10 oled but you have to understand that i have to go through my entire testing process
it's like reviewing another television altogether and if i find no difference all the time and
effort to source another review sample and perform all these tests would have been wasted
when i could be reviewing another new television or making new videos
that's why i can only afford to carry out firmware analysis for the ones that i know
will definitely bring important new features such as this 4k 100 liter double vision gaming one
anyway in the picture menu there's also a new minimum brightness slider after installing
firmware 4.30.10 the setting only becomes active once you set energy saving to auto
and what this slider does is to let you set a limit so that the light output doesn't drop below
a certain threshold in automatic energy saving mode to explain if you engage energy saving
and set it to auto the lg cx or c10 will automatically adjust the light output
depending on the amount of ambient lighting detected by the light sensor on the television
if you decrease minimum brightness to zero this will allow the energy saving algorithm
to dim the screen to the darkest level as deemed necessary according to detected ambient lighting
whereas if you increase minimum brightness to 10 the energy saving dimming won't be as
aggressive in any case i always advise you to turn off energy saving on any television including the
lg cx or c10 for the most consistent light output and color accuracy so there is no need for you to
worry about this minimum brightness slider at all oh one thing about playing games in 4k 120Hz Dolby
vision on the xbox series x is that some of you may be concerned that you are only getting 8 bit
Ycbcr 422 in dolby vision mode instead of 10 bit rgb output in hdr10 this is correct and there's
nothing wrong with your television or your xbox series x the reason why it's showing 8 bit ycbcr
422 is because the xbox series x uses the low latency or source led version of dolby vision
which is transmitted via a 12 bit ycbcr 422 video signal however any 422 package be it 8 bit 10 bit
or 12 bit will look the same to a sink device such as the television and conservatively lg tvs
including the cx were reported as 8 bit ycbcr 422 when in actual fact it's 12 bit ycbcr 422
so there's nothing to worry about from your end to find out if you should play games in dolby
vision or stick with hdr10 on the xbox series x i've demonstrated the benefits and downsides for
both formats in my adobe vision versus hdr10 gaming side by side comparison video here