Troubleshooting steps if the stops working after the flash. RR8501 USB Firmware Software Bios Bin - Lab-One Forum
This report details the firmware requirements and installation process for the RR8501 C031D Download RR8501 C031D 1680x1050 USB rar
Plug the TV back in. The standby light (usually red) should begin flashing rapidly, indicating the update is in progress. Troubleshooting steps if the stops working after the flash
If power is interrupted during the USB flash, the board may become "bricked" and will require a hardware programmer (like the CH341A) to fix. If you'd like, I can help you find: Download RR8501 C031D 1680x1050 USB rar
Use a FAT32 formatted USB drive (ideally 4GB or 8GB).
Installing the software via USB is the most common way to update these boards.
A for your specific LCD panel to confirm the voltage.