HP-UX 11i Version 1 Installation and Update Guide, December 2003

Updating to HP-UX 11i v1
Quickstart/Overview for the Update Process
Chapter 6 121
NOTE You now only use one source regardless of which OS is the starting point.
Although you may be used to specifying the target OS, this is not a
requirement anymore.
NOTE You can run update-ux in command line or interactive mode. For
interactive, use the -i option.