Since official manufacturer archives do not exist for these generic boards, you can find the file on specialized repair communities. Search for "R51 EA816 1366x768 firmware" on these platforms:
Use an external programmer (like the CH341A) to read and save a backup copy of your TV's current SPI flash chip before writing the new one.
What is the printed on the green circuit board?
This specific file is a firmware dump (usually in .bin format inside a .rar archive) used by technicians to flash or repair LED TV mainboards. Because these files are proprietary and hosted across various private technician forums, there is no single safe, official public download link.
Search the board number on YouTube. Technicians often share Google Drive or MediaFire links to the exact firmware in their video descriptions. β οΈ Step 3: Safe Flashing Precautions
