Firmware package for the Dell Latitude 5400 whose name indicates a locked (LCKD) dump and an unlocked version, in an 11.4 MB RAR. Having both images side by side is handy for seeing what changed and for restoring a system whose BIOS password is unknown. The unlocked image is normally written to the SPI flash with an external programmer. Save the original chip content before flashing, verify the write afterwards and ensure the image size equals the capacity of the flash chip on your board.
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 @biosfilebins. 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 →