What is the device running, and what is your target version ?
GUI (web interface) — typical for admins
Or click "Install" if you have already backed up your configuration. fortigate firmware download install
This method is useful for remote upgrades or bulk operations via TFTP.
Once the firewall reboots and you can log back into the interface, perform these checks to ensure the upgrade was successful: What is the device running, and what is your target version
Execute the following command to download and install the image:
Always test in lab before production!
Firmware installations require a system reboot. Schedule the upgrade during low-traffic hours to minimize user impact. Share public link
For advanced administrators or remote deployments, the Command Line Interface (CLI) utilizing a TFTP or FTP server is highly efficient. Once the firewall reboots and you can log
Maintaining up-to-date firmware on your FortiGate next-generation firewall is critical for safeguarding your network infrastructure against evolving cyber threats. Firmware updates patch known vulnerabilities, introduce advanced security features, and optimize system performance. However, upgrading a production firewall requires careful planning to prevent configuration corruption and minimize network downtime.
Scripting/automation — for scale