Plug the TV back in or press the Power button. Most boards will automatically detect the file; you may see the standby LED blink rapidly, indicating the update is in progress.
If the screen remains blank or distorted, ensure you used the correct 1440x900 file, as incorrect resolution firmware can cause display issues. Troubleshooting Tips Download RR8501 C031A V50 1440x900 USB rar
The download is usually a .rar or .zip file containing a .bin or upgrade_loader.pkg file. Plug the TV back in or press the Power button