The best practice in 2025 is not to hunt for that last firmware image on a dead support portal. It is to retire the device. The 80C belongs in a museum or a home lab, not defending a production network.
These entry-level models cost roughly the same as a used 80C but offer 10x the performance and will receive updates until 2030+. The 40F runs FortiOS 7.4 natively. fortigate 80c latest firmware version
Let’s be blunt. While 5.2.13 is the technical latest firmware, Fortinet stopped releasing security definitions (AV, IPS, Web Filtering) for FortiOS 5.2 in . Furthermore, the engine updates for the 80C stopped even earlier due to memory constraints. The best practice in 2025 is not to
