Raw 2.00 MB BIOS binary for the Sony VAIO M851, compatible with the MBX-204 and MBX-217 motherboards according to the file name. As an uncompressed .bin it can be loaded directly into SPI programmer software such as the CH341A tools or flashrom. The 2 MB size corresponds to a 16 Mbit flash chip, so make sure your board uses the same capacity. Sony identifies VAIO boards by MBX number, so check the label on the PCB, and always save the original firmware before writing.
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 .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 →