Updating from a release of HP-UX to another release
of HP-UX that was released earlier in time is not supported. For example,
trying to update from HP-UX 11i v2 June 2007 release to the HP-UX
11i v3 February 2007 release is not supported. This could cause system
incompatibilities and unpredictable results. If you attempt to update
to an earlier version of HP-UX, the update process will stop without
making any changes to your system and you will get the following error
ERROR: You are attempting to update from your release of HP-UX to a version of HP-UX that
was released earlier in time. This is not supported. The update process has stopped
without making any changes to your system. Please see the 'Supported Update Paths'
section of the HP-UX 11i v3 Installation and Update Guide for more information.