Fortigate Firmware Download Install (2026)

FortiGate uses an upgrade path system. You cannot arbitrarily jump versions.

Example: If you are on v7.0.12 and want v7.4.3: fortigate firmware download install

The tool will output a sequence like: v7.0.12 → v7.0.13 → v7.2.5 → v7.4.1 → v7.4.3 FortiGate uses an upgrade path system

You must follow this path exactly. Skipping intermediate versions is responsible for 70% of bricked firewalls. The tool will output a sequence like: v7

The only official source for FortiGate firmware is the Fortinet Support Portal.

Once you have the firmware file, use the Web UI or the Boot Menu.

Before installing the firmware, complete these final checks: