Dell Inspiron or Vostro 3550 BIOS dump for the Core i7 version, board number 10245-1, marked OK in the name. The 10245-1 number follows the Wistron pattern, the ODM behind many Dell notebooks. The 4 MB file has no extension, so treat it as a raw SPI image and confirm it matches a 4MB chip. Use a programmer to write it after saving the original, which holds the service tag and system data, and check the board number printed on your PCB matches.
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 @bioshub. Enginerys does not host this file.
Back up your own chip before writing any dump, and match the full board number and revision. Flashing guide →