The brightness of the backlight changes after performing a software update.
Due to differences in the initial setting values for each software update, after performing the update, the backlight setting and the brightness may change.
If you want to adjust the brightness, follow the steps below.
1. Press the HOME button on the remote control.
2. Select Settings.
3. Select Display in the TV category.
4. Select Picture.
5. Select Brightness.
6.Adjust to your desired brightness.