I just got off the phone with Palo support as I'm doing an upgrade from 8.0.9 to 8.1.4. They said all I need to do is download (not install) the base 8.1.0 image, then download and install 8.1.4
While on the line with them, I came across this from documentation
If you are already running a PAN-OS 8.0 release, download and install the latest PAN-OS 8.0 maintenance release and reboot
and then this
You cannot skip installation of any feature release versions in the path from the currently running PAN-OS version to PAN-OS 8.1.0.
I asked support if I should download and install 8.0.13 first but they insist its not necessary. The first upgrade as they suggested did work, but the documentation says otherwise. I have about 30 more to do
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