BIOS archive for the Sony Vaio VPCCW2S1E notebook on board MBX-226, sized 1.01 MB as rar. MBX numbers are Sony's own motherboard designations, and the file complements the MBX-226 schematics. No BIOS version is given. Use it to rewrite the flash chip with an external programmer when the laptop fails to start after a corrupted update. Before writing, read and store the existing contents of your chip, verify the MBX-226 label on the PCB and ensure the image size matches the chip.
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 →