BIOS image for the Dell OptiPlex 7070 desktop, board number 17509-3, sized for a 32 MB flash chip and marked as tested and working. It comes in an 8.4 MB RAR archive. The numbering follows Wistron's pattern, the ODM behind many Dell desktop boards. Program the dump onto the SPI chip using a programmer when the system will not POST or the firmware is corrupted. Save the original chip contents first to keep service tag data, and make sure the chip really is 32 MB.
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 →