Upgrade Fortigate firewalls with fortimanager with free trial license

Hi Mohamed_h,

Please confirm what is your FortiManager and FortiGate firmware version.

"no valid FMWR license error when upgrading managed FGTs".

You can try to apply a workaround:

Re-download FGT contracts from FDS server by running the following commands on the FMG:

# diagnose fmupdate del-device <FGT_SN>
# diagnose fmupdate service-restart fds
# diagnose fmupdate service-restart fwm

Let me know if it helps.

Please note BUG ID 1068809, reported in firmware version 7.2.6

https://docs.fortinet.com/document/fortimanager/7.2.6/release-notes/454729/known-issues

1068809 Users may encounter a "no valid FMWR license" error message when attempting to upgrade FortiGate firmware images from FortiManager, even if the devices have valid firmware contracts.

This issue is resolved in firmware version 7.2.7 or later.

https://docs.fortinet.com/document/fortimanager/7.2.7/release-notes/972111/resolved-issues

If you have found a solution, please like and accept it to make it easily accessible to others.

Regards,
Aman

Upgrading Fortigate firewalls using FortiManager with a free trial license is a great way to manage your network security more effectively. FortiManager allows centralized management of your Fortigate devices, making the upgrade process smoother and more efficient. Just make sure to follow the setup guide and configure everything properly to ensure a seamless upgrade. If you’re managing large-scale configurations, tools like RocksDB can optimize your backend data handling and enhance performance.