Use the Fortinet Upgrade Path Tool to find the specific sequence of versions (e.g., 5.2.9 → 5.4.10 → 6.0.x).
If you still need the firmware for lab or testing purposes, you can download it by following these steps: Log in to the Fortinet Support Portal Navigate to Firmware Download Select the product and look for version 6.0 Locate the specific file: FGT_200D-v6-build0528-FORTINET.out (or the build corresponding to 6.0.17). Recommended Next Steps fortigate 200d latest firmware