Firmware archive for Sony VAIO models VPCEE21FX, VPCEE22FX, VPCEE23EB and VPCEE23EL, which the name groups together as sharing one BIOS. The zip weighs about 1.07 MB and gives no board number, revision or version, so check the contents before use. A dump like this serves to recover a laptop with a corrupted or locked BIOS through an SPI programmer. Compare the board number printed on the PCB with known references, back up the existing chip, and make sure the file size matches the flash chip capacity.
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 .zip file
Compressed archive that every operating system opens without extra software.
Back up your own chip before writing any dump, and match the full board number and revision. Flashing guide →