A 4 MB BIOS dump for the ProBook 4520, stored without an extension, which is common for raw SPI reads. The name states only the model, with no motherboard number or revision, so verify the board before using it. The size fits a 32 Mbit flash chip, which is written with an external programmer through a clip or after desoldering. It is useful when the machine powers on with no image or keeps restarting. Back up the current chip and verify the write afterwards.
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.
Back up your own chip before writing any dump, and match the full board number and revision. Flashing guide →