I updated the TVs firmware, after the firmware flash I didn't really pay attention but now it has gotten worse, while in any screen other than the TV or while watching with video the screens brightness flickers, it gets darker then lighter constantly, I don't want to say it's a panel problem, but android is funny, flashing may have actually damage the panel, I remember that flashing some android phones years ago damaged the theft screens because of some bug in the code spiked up some frequencies and burned some connectors inside therefore people ended up with screen damage .

I am doing factory reset after factory reset hoping it will stop, I think it's just a firmware problem since this didn't happen before, but I also want to mention that I did turn all settings in brightness off at one time. Also I want to mention that I didn't notice this problem after it flashed either, but still happening after factory reset.

At first video seems to play without flicker but I still notice it, I turn off light sensor it seems to stop it, I turn off the tv not standby but turn off the flickering comes back as before even after light sensor was turned off. Yes it is happening system wide even when screen saver comes on, very annoying and I don't know if a new firmware will fix or not. I have included some of the the flickering after a factory reset.