BIOS image for the Sony VAIO VPCS13AFG on Quanta board DAGD3AMBCC0 revision C, also marked as Sony MBX-216, compressed into a 1.51 MB RAR. Quanta built this board, as its DA-prefixed code shows, while MBX-216 is Sony's own board designation. Flash it to the SPI chip with a programmer when the laptop does not post or the firmware is corrupted. Check both numbers and the revision on the PCB, save the original chip contents first and confirm the image size matches the flash.
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 →