This happens when the firmware is meant for a different LCD panel version. You will need to access the TV's service menu (often accessed by pressing Source/Input + 2580 or Menu + 1147 on the remote) to adjust the "Panel Flip" or "LVDS Map" settings.

If your TV is connected to the internet via Wi-Fi or Ethernet, this is the simplest method.

: Go to Settings > Developer Options . Scroll down to the Apps category and change the "Background process limit" from Standard to At most 2 processes . This prevents background applications from exhausting your 512MB RAM allotment.

Firmware updates often tune the board's pulse-width modulation (PWM) for better backlight control, fix color-banding issues, and resolve annoying audio-delay issues when using external soundbars via HDMI ARC or Optical outputs. Step-by-Step Guide to Updating Your TV

:

Insert the prepared USB drive into the on the back of the TV board.