Upgrading Fortigate Fortios version is easy:
-
Find the correct upgrade path for the model you have
https://docs.fortinet.com/upgrade-tool -
Back up the current configuration: Admin → Configuration → Backup
-
If your Fortigate has an active subscription – upgrade directly from the
Fortiguard servers, and if not – upload each Fortios image as a local file.
Downgrading is not that straightforward. The reason is that major version
releases (and many times minor) change the configuration commands in some way –
remove, add, move location. And when upgrading, the Fortios “upgrades” the
configuration file as well fixing the differences between releases. E.g. in
FortiOS 5.x, and 6.x you configure SD-WAN as config system virtual-wan-link,
but in FortiOS 7.x it was replaced with config system sd-wan. When you follow
the…
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Author: Yuri Slobodyanyuk
Article used for cyber security disclosure.
