Raw BIOS binary named for the 4320S model, 4.00 MB in size. The name supplies only the model designation, with no brand, board number, revision or firmware version. Repair technicians use images like this to restore a laptop with a bricked BIOS by clipping onto the SPI flash chip and writing the file with a programmer. Dump and archive the original contents before erasing, verify the chip is a 4 MB part, and check the motherboard identity printed on the PCB before flashing.
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 @biosfilebins. 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 →