If you're a registered user or have a valid support contract, you can access the Fortinet Support Portal for more detailed information:

Recommended for testing new capabilities. These are earlier versions in a release cycle that may contain bugs not yet addressed in later patches. Pre-Upgrade Checklist

To ensure you are getting the latest and verified firmware, use the following sources:

Select your specific hardware model (e.g., FortiGate 200F, 80F, or 1000D). Note: Firmware is model-specific; never cross-flash.

After the firewall reboots, run this verification checklist: