BIOS dump of 32.0 MB labelled k491p rev 2.0, where k491p appears to be a board or project code and rev 2.0 the board revision, though the name does not state the manufacturer or laptop model. The size fits a 256 Mbit SPI flash chip. Match the code and revision against the silkscreen on the motherboard before use, read and back up the existing chip with a programmer, and check whether personal data such as serial number or Windows key needs restoring from the original image.
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 @laptopchiplevelexpert. Enginerys does not host this file.
How to open a .bin file
A raw, byte-for-byte image of a flash chip: the main BIOS / UEFI, the embedded-controller (EC) firmware, or both.
Back up your own chip before writing any dump, and match the full board number and revision. Flashing guide →