Firmware image for the Dell OptiPlex 7040 Tiny (micro form factor) desktop, identified by codes E170968 and BK64394D with PWB revision A00. The RAR archive is 21.6 MB and the name indicates a 16MB BIOS, intended for a 16 MB SPI flash chip. Technicians use such a dump to recover a board that will not POST after a failed update or corrupted flash. Compare the PWB code and revision printed on your board, back up the existing chip first, and verify the image size against the chip before writing.
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 →