Firmware archive for the Dell XPS L501X, with the name noting the P11F regulatory model designation used on this notebook family. No board number, revision or BIOS version is given, so look inside the 1.75 MB RAR and compare the image against your board before writing it. Such dumps are used to revive a board with a corrupted BIOS by programming the SPI flash directly. Read and save the original chip first, make sure the board actually matches, and verify the image size equals the flash chip 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 →