If the GUI does not show the option to upgrade, you may need to upgrade to an intermediate version first.
Once you have the firmware file, use the Web UI or the Boot Menu.
Save —one on your machine and one on an IT share drive. fortigate firmware download install
How to Download and Install FortiGate Firmware: A Complete Step-by-Step Guide
Input your current Product (FortiGate), your hardware model, your current firmware version, and your target firmware version. Click . If the GUI does not show the option
This is your source version .
Upgrading FortiGate firmware involves a precise sequence of verifying compatibility, backing up configurations, and executing the installation. Following the correct path ensures system stability and prevents configuration loss. 1. Pre-Upgrade Preparation How to Download and Install FortiGate Firmware: A
Disclaimer: This article provides general instructions based on current Fortinet practices as of June 2026. Always refer to official Fortinet release notes for your specific environment.
Firmware downloads require an active . Ensure your device is registered to your Fortinet Support account, or you will be blocked from the download area. Phase 2: How to Download FortiGate Firmware
Restart the FortiGate. When prompted, press any key to enter the boot menu. Select the option to .
If you want, I can produce a concise printable checklist or a scriptable set of CLI commands tailored to a specific FortiGate model and current firmware version—tell me your model and current firmware and I’ll generate it.