Step 1: Check the Upgrade PathDo not jump multiple versions at once (e.g., from 5.4 to 6.0). Use the Fortinet Upgrade Path Tool on the Support Portal. It will tell you the exact sequence of intermediate versions you must install to maintain configuration integrity.
If your organization requires these modern protections, it may be time to consider a hardware refresh to a FortiGate 200F. The 200F offers significantly higher throughput, specialized SPU (Security Processing Unit) chips, and support for the latest security signatures that the 200D simply cannot process. Conclusion

Step 1: Check the Upgrade PathDo not jump multiple versions at once (e.g., from 5.4 to 6.0). Use the Fortinet Upgrade Path Tool on the Support Portal. It will tell you the exact sequence of intermediate versions you must install to maintain configuration integrity.
If your organization requires these modern protections, it may be time to consider a hardware refresh to a FortiGate 200F. The 200F offers significantly higher throughput, specialized SPU (Security Processing Unit) chips, and support for the latest security signatures that the 200D simply cannot process. Conclusion