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: Back up the complete configuration of your FortiGate before making any changes. The upgrade process will prompt you to do this as well. Store the backup in a safe, off-device location. Also, download a copy of your current firmware image in case you need to perform a downgrade.
Verification is a critical security step to confirm the file was not corrupted during transit or tampered with. Fortinet Support Download Firmware fortigate latest firmware version download verified
For many administrators, the "Latest" does not always mean "Day One Adopt." FortiOS 7.4 has matured into a highly stable branch.
| Maturity Level | Suffix | Typical Use Case | |---|---|---| | | F | Early adopters, test environments | | Mature | M | Production environments with an existing support contract | | Long‑Term Support (LTS) | LTS | Long‑term stability for critical infrastructures | Also, download a copy of your current firmware
| Model Range | Recommended Version | Release Status | |-------------|--------------------|----------------| | FortiGate 30E–200F series | | Mature / Stable | | FortiGate 400F–3500F series | v7.4.7 or v7.6.2 (for new features) | Verified | | FortiGate 3700F+ | v7.4.7 | Preferred |
On the Firmware Management page, set the dropdown menu to FortiGate . | Maturity Level | Suffix | Typical Use
To verify the integrity of the downloaded firmware file, follow these steps:
against your downloaded file to ensure it hasn't been corrupted or tampered with. Critical Pre-Upgrade Steps