Backup image of 4 MB with no file extension, named for a Sony VAIO VPCF1 series notebook and marked OK, so it was likely read from a working machine. No board number or revision is given. Treat it as a raw binary for a 4 MB (32 Mbit) SPI flash chip and write it with an external programmer. Compare the motherboard with the source before using it, and always save your own chip contents first, since the dump may carry another unit's serial 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.
Back up your own chip before writing any dump, and match the full board number and revision. Flashing guide →