Rahim wrote:
> We had someone upgrade their AIX 5.2 box from SP3 to SP4. A couple of
> days later, he decided he needed to roll back to SP3. He came to us to
> see if it was possible to do so, and pointed out that he had installed
> the Service Pack in the APPLIED state (not COMMITTED).
> However, when I took a look, I found that while some of the filesets
> were APPLIED, others were COMMITTED. I looked around, but couldn't
> find any way to roll back to SP3. Any ideas?

A maintenance-level upgrade does not necessary upgrade all filesets.
There might be filesets for which there is no new version from ml3 to ml4.

use lslpp -h on the commited filesets. If the install-date is older than
the date where you upgraded, you can go back to ml3 by removing the
applied filesets.

btw: I would ask why "someone" decided to go back. Its better to analyse
the problem than just deleting patches.