I have decided to upgrade my Palo Alto 850 from version 9.1.9 to 9.1.12.h3 but after the secondary Palo Alto upgrade facing an issue where interface are not getting up so my team decided to roll back to version 9.1.9. Should my configuration completely wiped out if i downgrade my device ? or if no then what are the precaution i have to take for downgrade procedure.
Also i have got below link for downgrade steps, Pls let me know can i follow this link for my case.
Just as an FYI, the downgrade article that you linked actually isn't how I would recommend reverting from a failed upgrade. It'll work perfectly fine, but you don't need to "re-install" the maintenance release to do so. The firewall actually has two partitions (three including the maintenance partition). When you install a new update, what you're doing is actually installing the image on the other partition.
You can reference THIS KB going forward, but the software manager (swm) can be utilized to "revert" to the old installation that you were literally just running without any issue. You essentially just return to the old partition.
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