HP Integrated Lights-Out User Manual page 211

3. Click Upgrade Firmware. The selected management processors will now be
upgraded. Although this utility enables you to upgrade hundreds of
management processors, only 25 management processors are upgraded
simultaneously. Network activity is considerable during this process.
4. After the upgrade is complete, click Next.
During the firmware upgrade process, all buttons are deactivated to prevent
navigation. You can still close the application using the "X" at the top right of the
screen. If the GUI is closed while programming firmware, the application will
continue to run in the background and complete the firmware upgrade on all
selected devices.
Lights-Out Directories Migration Utilities 211