Created on
12-05-2007
12:00 AM
Edited on
10-05-2025
02:27 PM
By
Jean-Philippe_P
Description
This article describes key information about FortiManager system upgrading, downgrading, and configuration restoration.
Scope
FortiManager.
Solution
It may be possible to perform some of these operations that are not supported, and do not see an immediate problem. However, unrecoverable back-end problems will be encountered during eventual usage.
After any firmware downgrade, the FortiManager MUST be factory reset, and disk format must be performed.
For more information about the downgrade, see this document: Downgrading to previous firmware versions: FortiManager v7.X - Upgrade Guide - Downgrading to previous firmware versions.
For any configuration restore procedure, the FortiManager must first be factory reset.
Downgrading can cause configuration loss as well. It is recommended to reset the device, using the commands below:
execute reset [all-settings | all-except-ip]
execute format disk
Related article:
Troubleshooting Tip: How to identify firmware downgrade without factory reset on FortiManager
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