Place the .bin file in the root directory (not inside a folder).

The (is it stuck on the logo, or no power?). This will ensure you don't download the wrong version!

Use WinRAR or 7-Zip to extract Part 1 (it will automatically pull data from the other parts). Format USB: Use a 4GB or 8GB USB drive formatted to FAT32 .

Since direct links often break, search these reputable technician platforms for "L40CD500 firmware":