BIOS dump for a Sony VAIO SVD13 laptop built on the MBX-281 motherboard, packed as a RAR archive of 3.13 MB. The name states an 8 MB image and marks it as tested and working. Sony uses the MBX numbering for its own board designations, so confirm the MBX-281 label on the PCB before flashing. Write it with an SPI programmer such as a CH341A or RT809 to an 8 MB chip, and save a full read of the original chip first so the serial and model data can be restored if needed.
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 .rar file
Compressed archive — the usual wrapper for a schematic + boardview pair or a BIOS + EC set.
Back up your own chip before writing any dump, and match the full board number and revision. Flashing guide →