install license by USB, like the restore.abf
Some of our customers use OSPF on the UTM to connect their network. Sometimes they miss to renew the license ...
If we got notice of that, we can help them for maybe 10-30 days with a temporary license until they get the real new one.
But the problem is, the UTM is not accessible from anywhere (SSL VPN or Network) because the routing instance is dead.
My idea is to send them the temp file, they put it on a usb and reboot the UTM.
If the utm searches for such a file it can easily be installed.