⚠️ The FortiGate 200D is End of Engineering (EOE) and End of Support (EOS) as of March 2023. The last available stable firmware train is FortiOS 6.0.x (final: 6.0.18). Do not attempt to load 6.2, 6.4, 7.0, or newer — they are not supported and will brick the device.
is . While newer models like the FortiGate 200E or 200F support FortiOS 7.x, the 200D hardware architecture is capped at the 6.0 branch. fortigate 200d latest firmware extra quality
Upgrading to the final 6.0 branch (v6.0.18) provides the "extra quality" of stability and the last available security enhancements: Critical Note on FortiGate 200D ⚠️ The FortiGate
Through the web interface, navigate to System > Firmware > Update and follow the prompts to upload and install the firmware image. FortiOS version 6
Maximizing Performance: FortiGate 200D Latest Firmware and Quality Optimization