BIOS firmware archive for a Sony VAIO laptop built on the MBX-214 motherboard, in the version for Nvidia graphics, packed as a 1005 KB RAR. MBX numbers are Sony's own board designations printed on the PCB, and the same MBX code can exist with different GPU options, so the Nvidia label matters. Use it to reprogram a corrupted BIOS chip with an SPI programmer. Check the board number on the PCB, back up the original flash and match the image size to the chip before writing.
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 →