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

Updating to HP-UX 11i v1
Quickstart/Overview for the Update Process
Chapter 6116
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.