Originally Posted by sechev00
It's most likely the recent firmware. I've got a 0% black pattern from the thread you shared on a USB stick and no matter how low you turn down brightness, it has a slight glow. Can mainly notice it when you have black transitions or if there is a good bit of black displaying on the screen for a while. Either way it's annoying the more I view stuff in a dark room which is most of the time considering OLED is known for true blacks. Hoping someone can share US previous firmware to successfully downgrade :/
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....and you did the same test with the same pattern in the same conditions with the previous firmware and had no glow? Not doubting you, just making sure.
I'd recommend to anyone who hasn't updated to latest firmware yet, to actually check with a 0% black field from a calibration pattern set in a completely dark room, eyes adjusted right before updating
. Then check again after updating. It's possible, although unlikely, that you already had glow but maybe didn't notice it before. As an example, when I first checked for glow many months ago, I didn't see glow at 51. Then when I checked a month or 2 later, I did notice a very faint glow at 51. I'm pretty sure no firmware updated during that time. So either something else changed with the TV or I missed the glow the first time around (most likely).
As far as some people getting glow even when turning brightness way down, that was reported by some with previous firmware as well. So unless you checked for that condition both right before updating to latest FW and after updating, you may have already had this issue with older firmware and not realized it. There are some members posting that they can still achieve no glow with the latest firmware, so this issue may be set specific.