ZIP archive of 3.27 MB holding BIOS firmware for the ASUS S551LB ultrabook, with no version, revision or status given in the name. The archive size hints that it may be a compressed full image or an official update file, so check the contents after extraction. A raw image must match the SPI flash capacity before writing with an external programmer. Compare the board revision on the PCB with your unit, and save a full read of the original chip to retain serial and MAC data.
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 @biosarchive. 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 →