BIOS dump for the Dell XPS 8500 desktop, with the name referencing DH77M01 and CY0629 identifiers and an SST 25VF032B flash chip, a 4 MB (32 Mbit) SPI part. The RAR archive is 2.84 MB and should be unpacked and checked before use. A technician would write the image with a CH341A or similar SPI programmer after reading and saving the original chip contents. Confirm the board markings match DH77M01 and that the image size equals the chip capacity, otherwise it will not fit or boot correctly.
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 →