08-12-2022 11:42 AM
Hello,
First backup the config. This doc should step you through the process. I forget when they allowed the base release download only and install the preferred release, i.e. just download 9.0 and download and install the latest version of the 9.0.x release. But you can do it with the 9.1, eg download 9.1.0 code but download and install the preferred release 9.1.x.
With an HA pair, do it all on the standby unit first. I when doing large jumps as these, it might be wise to go slow. What I mean is do the first jump on the standby, fail over, then upgrade the other one to the same version. Then keep going until you are up to the version you want to be at. Also make sure you dynamic updates are up to date as well, otherwise the PAN wont let you upgrade the OS.
Cheers!
