Tested BIOS dump for the Dell Vostro 3910 desktop PC, motherboard 222004-1. That number follows Wistron's numeric board pattern, and Wistron builds many Dell systems. Confirm the code printed on the board before flashing. The 12 MB archive likely holds a full flash image for a large SPI chip. Read and save the original chip first, as it contains the service tag and system data. Then write the file with a programmer and verify it.
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 @generalbios. 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 →