Flat-panel televisions can be updated without the need for a trip to the factory or service from a company technician. Update the firmware on a LCD TV yourself by downloading the firmware file from the company's website. The firmware file can then be transferred to the LCD TV. The procedure does not require any special skills and is designed not to violate any warranty that might be in place.
Launch the default web browser by selecting it from the "Start," "All Applications" pop-up menu. Go to the website of the manufacturer of your LCD TV. Click on the "Support" link on the website.
Select the name and model number of the LCD TV from the drop-down menus below the "Download firmware" tab on the web page that appears.
Right-click on the most recent firmware update that appears beneath the drop-down menus. Select "Save as" from the pop-up menu. Click on the "Save" button on the pop-up window that appears. Wait as the firmware update file is downloaded to the desktop.
Insert the USB flash drive in a USB port on the computer. Wait for the icon of the USB flash drive to appear on the desktop.
Double-click on the firmware update file once it has downloaded to decompress it. Double-click the firmware program to launch it. Follow the menu prompts to install the firmware on to the USB flash drive.
Right-click on the icon of the USB flash drive. Select "Eject" from the pop-up menu. Remove the USB flash drive from the computer.
Insert the USB flash drive in the USB port on the LCD TV---the port will either be behind a panel on the bottom front, on the left or right side or on the back.
Turn on the LCD TV. Press the "Menu" button on the remote. Navigate to "Settings." Select "Update" or "Service" from beneath "Settings." Select "USB" from the list of choices presented beneath "Update" or "Service."
Select the "Start" or "Begin firmware update" button. Wait as the LCD TV updates its firmware using the file from the USB flash drive.
Remove the USB flash drive from the USB port once the LCD TV reboots itself and then shuts itself down.
A power failure during the time the LCD TV is updating can cause it to become unusable.