Palo Alto Networks PAN-OS NGFW Upgrade Tutorial
Upgrading from 9.1.5 to 9.1.7 using command line for all the CMD warriors out there, and then from 9.1.7 to 9.1.9 using the GUI, both are very easy and there is little chance of error, I prefer the GUI to be honest as it is a little more friendly to look at and deal with, let me know what you think.
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