This article describes that it is sometimes necessary to upgrade the ADOM and it is not possible to do it due to an unsupported firmware version according to the compatibility.
This blocks the way to upgrade the ADOMs. Or sometimes it is just necessary to reset ADOM settings so there are the default values of it.
Note: Prior to resetting the ADOM version, all devices in that ADOM must be removed. This can be done from the GUI. The syntax for deleting devices using the CLI is found at the bottom of this article.
Warning: Deleting a FortiGate in FortiManager will cause the FortiManager to attempt to remove all references to the FortiManager from the FortiGate. To keep the FortiGate's configuration, be sure to place FortiManager in Offline Mode prior to deleting the devices from the ADOM.
Afterward, it is possible to exit Offline Mode.
The way to reset ADOM by running the following command:
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