BIOS image for the Lenovo S2 on Quanta board DA0PS9MB8E0, archived in a 5.30 MB ZIP file, with the name referencing a 25Q128FV flash chip. That Winbond part is a 128 Mbit, 16 MB SPI device, so the dump should be written to a chip of the same capacity using an external programmer. The board number follows Quanta's DA0 pattern and is shared with the ThinkPad 13 platform. Always read and save the original chip before flashing, and verify after writing that the checksum matches the source file.
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 →