The safest protocol is the , which bypasses the Windows operating system entirely. Step 1: Extract the Firmware Files

Double-click sp64701.exe to run it. It will automatically extract its contents to a folder on your hard drive (usually C:\SWSetup\sp64701 ). Do not proceed through the standard Windows-based installer.

: Users typically use the DOS Flash folder within this directory to copy the .BIN file to a FAT32-formatted USB drive to update the BIOS directly from the system's BIOS Setup menu . Z420 Bios upgrade wows - HP Support Community - 7515949