Download the .rar file and extract the contents. Copy the firmware file (often named SI6M33.bin or similar) directly to the root directory of your USB drive—do not put it inside a folder.
Once the blinking stops or the TV restarts, remove the USB drive. Download RR8501 C031A V50 1440x900 USB rar
If the TV doesn't recognize the USB, try a different drive or re-format it specifically to FAT32 on a PC. Download the
via USB is a straightforward process but carries a risk of "bricking" the board if interrupted. Download RR8501 C031A V50 1440x900 USB rar