Firmware dump for a Sony VAIO built on the MBX-214 mainboard, in a RAR archive of about 1005 KB. No model series or revision is given, so confirm the MBX number silkscreened on the PCB before using it. Such dumps are flashed onto the BIOS chip with an SPI programmer to bring back a laptop that will not post or has a damaged BIOS. Always read and store the existing chip contents first, and check the image size matches the flash capacity, since a mismatched file will not fit.
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 →