Upgrade FAZ ADOM 5.2 to 5.4

Dear all,

We have updated our FAZ from 5.2 to 5.4.2. After that we have updated all the FortiGate 5.2 in 5.4.

Now we want to change the ADOM's type in our FAZ to be "Fortigate 5.4" instead of "FortiGate 5.2" but we can't do that in the Web GUI, the option is in grey. Is there a way to change an ADOM type with a CLI command, or is there a procedure to follow?

Thanks.

Mathieu