Tested BIOS for the Dell Latitude D620 business notebook on Compal board LA-2791P, packed in a 1.27 MB RAR. This older platform uses a small SPI or firmware hub chip, so check the exact flash part on your board before choosing a programmer and adapter. Compal LA-numbered boards print the code on the PCB, and it should match. Read and save the original contents first, since the service tag and system data live there, and confirm the image size equals the 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 @pkbiosbdv. 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 →