Fortigate 100d Firmware Download Best |top|

Navigate to and click the Upgrade Path tab.

Or via GUI: System > Firmware > Upload (Ensure "Upgrade" is selected, not "Install" if preserving config). Fortigate 100d Firmware Download BEST

Report generated based on Fortinet public EOL policies and technical release notes. Last updated: 2025. Navigate to and click the Upgrade Path tab