BIOS firmware package for a Sony VAIO laptop built on the MBX-237 motherboard, supplied as a 1.51 MB ZIP archive. The name gives only the board code, so the exact VAIO model, the chip type and the dump method are not stated. MBX is the internal board designation Sony prints on its VAIO mainboards. Extract the archive and confirm that the MBX number on the PCB matches before writing. Read and save the original SPI chip with a programmer first, and make sure the image size matches the flash capacity.
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 .zip file
Compressed archive that every operating system opens without extra software.
Back up your own chip before writing any dump, and match the full board number and revision. Flashing guide →