BIOS firmware for a Dell Latitude 6520 with NVIDIA discrete graphics, in a 5.13 MB ZIP archive. No board number or version is given, so the graphics variant is the main matching clue, since integrated-only boards may need a different image. Such dumps are used to recover the laptop by writing the SPI BIOS chip with a hardware programmer. Check the motherboard marking on the PCB, read and keep the original flash contents, and confirm the image size matches the chip before programming.
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 .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 →