: If the laptop still boots but has issues, use a programmer to read and save the current firmware before making changes. Hardware Programming Steps
: Erase the chip, then select your new HP ProBook 640 G2 bin file and click "Write".
: Download the latest BIOS update from the HP Software and Driver page . Run the .exe and select the option to "Copy" or "Extract" instead of installing. This often generates a .bin or .fd file in the destination folder.
A .bin file is a raw binary image of the laptop's firmware. Unlike the .exe installers found on the official HP Support site , a bin file is meant for direct writing to the physical EEPROM chip using a tool like the . Where to Find the Bin File