BIOS binary for the Sony MBX-223 VAIO mainboard, 4.00 MB, fitting a 32 Mbit flash device. The name lists no revision, firmware version or model series beyond the board code. MBX numbers are how Sony identifies VAIO laptop motherboards, so matching that code on the board is the key check. Program the image with a CH341A or similar tool when the firmware is damaged, after saving the original contents, which may hold serial and configuration data unique to the machine.
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 @bios_laptop. 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 →