Once you have downloaded the correct file, do not immediately apply it. Follow these steps:
The only legitimate source for firmware is the . fortigate firmware download
Follow these exact steps to locate and download the correct FortiOS image file for your specific hardware model: Once you have downloaded the correct file, do
Click and verify the MD5/SHA256 checksum after the download completes. Method B: Directly via the FortiGate GUI (Cloud Download) fortigate firmware download
The device reboots, and the admin watches the pings. Once the dashboard reappears, they verify the and check the Upgrade History to ensure every component of the Security Fabric is humming.
This is the most straightforward method for most administrators.