Dell laptop BIOS archive identified only as 3421, most likely the Inspiron 14 3421, in a 3.65 MB RAR file. The name gives no board number, revision or chip type, so check the contents and match them against the motherboard before programming anything. Firmware dumps like this are flashed with an SPI programmer to recover machines with no display or boot loops after a damaged update. Read and store the existing chip contents first and make sure the image size equals the flash 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 @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 →