BIOS image for a Sony VAIO built on the MBX-247 motherboard, stored as a raw 4 MB binary. Sony uses its own MBX numbering for VAIO mainboards, and the name gives no model, revision or BIOS version beyond that board code. A raw dump of this size is meant for an SPI flash chip of matching 4 MB capacity (32 Mbit) and is written with a programmer such as a CH341A or RT809. Confirm MBX-247 on the board and save the original chip contents before you flash.
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 →