Official firmware images must be obtained directly from the Fortinet Support Portal.
: Use the search bar to find your specific model (e.g., "100F"). Look for the .out file and click HTTPS to download it to your local machine. Step 2: Installing the Firmware (GUI Method) fortigate firmware download install
: Always save a current backup of your configuration to a local PC or external drive. Official firmware images must be obtained directly from
: Access the Fortinet Support Portal using your credentials. An active support contract is generally required to access the download section. Navigate to Downloads : Go to Support > Firmware Download . Select Product : Choose FortiGate from the product list. Locate Version : Click the Download tab. fortigate firmware download install