FortiGate 200D Latest Firmware Updated: The Ultimate Lifecycle & Upgrade Guide
It is crucial to understand that while the path generation tool on the Fortinet support website officially begins at version 5.2.9, there are documented methods to upgrade from even older firmware. A comprehensive knowledge base article provides upgrade information for versions predating 5.2.9, enabling a properly sequenced path up to 5.2.8 before proceeding.