This package contains the System BIOS image and flash utilities for HP Z420/Z620 Workstations. These utilities can be used to restore or update the System BIOS. System BIOS is independent of the operating system. To determine the BIOS family and BIOS date, press F10 on the target workstation during Power On to run the Computer Setup Utility, and then select File/"System Information". This information can be saved into a text file on a USB flash media device by selecting File/"Save to Removable Storage Device".