BIOS dump for the Sony VAIO VPCZ117CF on motherboard MBX-206, marked OK, which suggests it has been tested, and tagged I5 for the Core i5 CPU variant. MBX numbers are Sony's own internal board codes. The RAR is 1.61 MB and is meant for programming the SPI flash with an external programmer on a unit with corrupted firmware. Make sure the board label reads MBX-206 and that the CPU matches, back up the original chip contents, and confirm the image size 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 →