About the Cisco Host Upgrade Utility
The Cisco Host Upgrade Utility (hereafter referred to as HUU) is a tool that you can use to upgrade the firmware on a Cisco UCS C-Series server. HUU includes an option that enables you to download a container for a selected platform on a Windows operating system. You can download the container from the HUU ISO by burning the ISO on a physical media. When you insert the physical media into the server, auto-run launches an Index.html page in your browser. This index.html page provides access to the location from where you can download the container. You also can download the container from the ISO using the standard ISO extraction utilities.
HUU provides a user interface where you can choose the firmware components that need an upgrade. In the previous releases (1.4(x)), HUU provided a text menu from which you could choose the components and initiate the upgrade. From version 1.5(x) onwards, HUU provides a graphical user interface to perform an upgrade.
Starting with release 4.0(2), the HUU user interface is updated to include the Components and Storage Drives tabs:
Components tab lists all the server components of a chosen server for upgrade or downgrade. You can upgrade the firmware of all components or specific components on this list.
If you choose to upgrade the firmware of specific components, you must upgrade the Cisco IMC, CMC and BIOS to the same version.
Storage Drives tab lists all the external storage drives (HDDs) available on the server. You can choose to upgrade or downgrade the firmware of all the storage drives or specific drives available on this server.
For information about the components supported and their firmware versions for various servers in a release, see the Firmware Version Listing and Internal Dependencies for Cisco IMC Releases.
For information about upgrading the firmware on C-Series servers using non-interactive HUU, see the Cisco UCS C-Series XML API Programmer's Guides