Download Rd8503 Pb824 1920x1080 General Usb Rar Info
Press and hold the button on the TV's local keyboard (not the remote).
Wait 5–7 seconds until the status LED starts blinking, then release the button.
: Extract the .rar file and place the main firmware file (often named upgrade_loader.pkg or similar) into the root directory of the USB. Flash Firmware : Turn off the TV and insert the USB drive.
: Uses low-power chip technology and a large heatsink for efficient cooling. USB Firmware Installation Guide