ZIP archive of 1.88 MB for the ASUS N551ZU laptop, with the name indicating BIOS version 307. The compressed size suggests an official update capsule rather than a raw SPI dump, though the contents should be checked. Update files like this are normally installed through the BIOS utility, while a full chip dump is written with an external programmer. If you intend to flash the chip directly, make sure the image matches the flash capacity and back up the existing contents 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 @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 →