Sony firmware archive labelled EE25FX, packed as a RAR of about 1.06 MB. The name gives only the Sony brand and the EE25FX model designation, with no board number, revision or chip details, so the archive must be unpacked to see which image it holds. Technicians use such dumps to restore a corrupted BIOS by writing it to the SPI flash with a programmer such as a CH341A. Compare the extracted image size with the capacity of the chip on the board and save a backup of the original contents before writing anything.
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 @biosbigarchives. 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 →