You can upgrade FortiManager 6.2.0 or later to FortiManager 6.4.8.
For other upgrade paths, see FortiManager Firmware Upgrade Paths and Supported Models.
For information about FortiManager support for FortiOS, see the FortiManager Compatibility chart in the Document Library at https://docs.fortinet.com/product/fortimanager/6.4.
This section contains the following topics:
- Upgrading FortiManager Firmware
- Upgrading the firmware for an operating cluster
- Checking FortiManager log output
- Checking FortiManager events
- Downgrading to previous firmware versions
When upgrading firmware, all ADOMs (and Policy Package Versions, if ADOMs are disabled) remain at the same version after the upgrade. For information about upgrading ADOMs, see the FortiManager Administration Guide.
Upgrading the device firmware can trigger an SQL database rebuild. During the database rebuild, new logs are inserted into the database and can be viewed, but existing logs are not available until the rebuild is complete. The time required to rebuild the database depends on the size of the database. You can use the