: Be aware that some versions (like 01.28.00 Rev.A) may prevent you from downgrading to an older BIOS version once installed. currently installed on your device? AI responses may include mistakes. Learn more Update the firmware on an HP printer | HP® Support
: If the update fails, ensure your system drive (C:) has enough free space and close all background applications, including antivirus software. hp q78 system firmware driver download