Small 512 KB firmware dump labelled HP 15G fanless X40, the second copy of this read. The size points to a 4 Mbit chip, which on laptops often holds embedded controller or keyboard controller firmware rather than the main BIOS, though the name does not say which. The X40 token is not explained and the board number is missing. Confirm the chip marking and capacity on your board, back up its contents, and only then program this image with an SPI programmer.
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 →