Sony Vaio VGN-CS320J firmware read from an MX25L8005 flash chip, packed in a 2.50 MB 7z archive. The Macronix MX25L8005 is an 8 Mbit (1 MB) SPI device, so the image inside should be 1 MB to fit. No motherboard number is given, so confirm the board before using it. Write the dump with an SPI programmer and clip to restore corrupted BIOS. Read and keep the original chip contents first, then verify after 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 @biosfiles. Enginerys does not host this file.
How to open a .7z file
High-ratio compressed archive, often used for large BIOS collections.
Back up your own chip before writing any dump, and match the full board number and revision. Flashing guide →