Until recently, we had VDP 5.8.0 up and running here. (It was a 5.5.x before, upgraded to 5.8.)
Now I noticed that there already is 5.8.4 and wanted to upgrade to it. The upgrade ISO showed up as incompatible, so I guessed I needed to make smaller steps.
I upgraded our 5.8.0 to 5.8.1 without problems.
I also upgraded the 5.8.1 to 5.8.3 without problems.
The pre-upgrade kernel uprgade and glibc patch are both installed.
But the upgrade ISO for 5.8.4 still shows up as "The connected upgrade ISO image is incompatible.". What do I need to do to upgrade to 5.8.4?