BIOS firmware for a device named 450-G2, which matches the HP ProBook 450 G2 naming, although the brand is not given; the archive is an 8.03 MB RAR file. The name lists no board number, revision or version. The size suggests an 8 MB flash image plus possibly a small extra file. Extract it and check the contents before programming the SPI chip. Back up the original chip first, confirm the board matches the dump, and verify the image size equals the 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 →