: Get the latest BIOS .exe from HP Support .
If you need the raw binary for a CH341A programmer or similar tool, follow these steps: hp z240 bios bin file link
: Because HP provides an executable ( .exe ), you must run the installer and select "Extract" or "Create Recovery USB" to find the N51_xxxx.bin file in the destination folder. How to Extract the .BIN File from HP SoftPaq : Get the latest BIOS
: Double-click the file. Instead of "Install," look for an option to "Extract" to a specific folder. hp z240 bios bin file link