ZIP archive of about 3.26 MB holding firmware for the S551LN, an ASUS VivoBook model name, although no brand is given in the file itself. The name gives no board revision or version number, so unpack it and inspect the image before use. Firmware like this is used to recover boards with corrupted BIOS, either through the vendor update tool or by writing a raw image to the SPI flash with a programmer. Make sure any image you program matches the chip capacity, and back up the original first.
The button opens the matching file on RM Schematics, or a source page if it is not catalogued there yet. The original attachment is from @biosbigarchives. Enginerys does not host this file.
How to open a .zip file
Compressed archive that every operating system opens without extra software.
Back up your own chip before writing any dump, and match the full board number and revision. Flashing guide →