When attempting to upgrade PAN-OS with an older Content Database version, an error is displayed. For example:
version 257 of the Content Database is required for the upgrade.
Note: This applies to any major platform upgrade. Check the error message for the required Content Database version in order to perform the upgrade.
Upgrade the Content Database to the latest version then perform the upgrade:
If the Content Database update fails due to this error: Content Filter Update Error "No matching apps package", run the following command through the CLI to upgrade the database:
> request license fetch