Plug the power back in. Most boards will automatically detect the file and begin flashing (indicated by a blinking standby light).
Use a tool like WinRAR or 7-Zip to extract the .bin file from the downloaded .rar archive. Download RD8501 568 1920x1080 USB rar
Once the light stops blinking or the TV reboots, remove the USB drive and check the display. Key Specifications Mainboard Model RD8501 (often TP.RD8501.568) Supported Resolution 1920x1080 (Full HD) File Type .rar (compressed) / .bin (firmware) Installation Method USB Upgrade / SPI Flash Plug the power back in