BIOS read taken from a Sony VAIO mainboard numbered MBX-189, with the name also carrying the marking M763 rev 1.0. The 2.00 MB binary appears to be a raw dump read straight from the SPI flash chip with a programmer. MBX numbers are Sony's own mainboard designations, so confirm the MBX code and revision printed on the PCB before writing. Read and save the original chip contents first, and check that the chip capacity matches this 2 MB image, since a mismatched size will not program correctly.
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 →