Unlocked BIOS image for a Dell Latitude 7400, prepared to remove the BIOS password, supplied as an 11.6 MB ZIP. Technicians program such a file into the board's SPI flash with an external programmer when the supervisor password is unknown or the firmware has become corrupted. A clip or desoldering may be needed to reach the chip. Read and store the original content before flashing, since it contains the machine's service tag, and confirm that the image size fits the installed flash chip.
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 .zip file
Compressed archive that every operating system opens without extra software.
Back up your own chip before writing any dump, and match the full board number and revision. Flashing guide →