I can provide a step-by-step programming guide if you tell me which you are using!
For users looking for a dedicated training tool without the full flight simulator, the A320 FMS Trainer PRO a320 fms activation key
Important: Some add‑ons require an internet connection even for offline key validation. Others (like Fenix A320) use a background app that handles activation automatically—you never touch the MCDU for licensing. I can provide a step-by-step programming guide if