Turn off the power to the LED TV or unplug it. Insert USB: Plug the drive into the USB port of the board.
Search for the specific file on repositories like Lab-One Inside or Zainab Tech . Download RR8501 C031A V50 1440x900 USB rar
If you need to adjust further settings (like mirror image or logo), you can often access the service menu by pressing Menu + 1147 on the remote. Turn off the power to the LED TV or unplug it
Once the blinking stops or the TV restarts, remove the USB drive. remove the USB drive.