Firmware updates are risky. Ensure the firmware version matches your TV's mainboard model exactly to avoid "bricking" the device.

Hold the button until you see a "Software Upgrading" or progress bar on the screen.

Download all files named 40E510S.part1.rar , 40E510S.part2.rar , and 40E510S.part3.rar . Place all parts in one dedicated folder on your computer.

Right-click on and select "Extract Here" using WinRAR or 7-Zip .