Sony VAIO BIOS archive for the board carrying the Sony designation MBX-229, packed as a 1.56 MB RAR. No laptop model, revision or ODM code is included in the name, so cross-check the MBX number and any other markings on your motherboard before use. MBX codes are Sony internal board names, while the actual ODM number is usually printed elsewhere on the PCB. Use the image to reflash a corrupted SPI chip with a programmer, keeping a backup of the original and verifying that the size matches the 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 .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 →