Description
This article describes key information about FortiManager system upgrading, downgrading, and configuration restoration.
Scope
FortiManager.
Solution
- FortiManager does not support downgrades on a populated or even a factory default database.
- FortiManager does not support the restoration of a backup file, on a mismatching firmware version.
- FortiManager does not support the restoration of a backup file, on a matching firmware version with an existing database (configuration).
- FortiManager upgrade path must be followed as indicated in the Release Notes.
It may be possible to perform some of these operations which 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 format disk must be performed.
For more information about the downgrade, see docs.fortinet.com: FortiManager <7.X> - Upgrade Guide - Downgrading to previous firmware versions.
For any configuration restore procedure, the FortiManager must first be factory reset.
Related articles:
Troubleshooting Tip: How to identify firmware downgrade without factory reset on FortiManager
