The old 1280s (now retired more than a year) are no longer supported in the Mission Planner, but you can load the code via Arduino if you turn off datalogging and the CLI to save memory.
Could you explain how to do that please?
No, could you please explain?. my 1280 is outdated too fast for me.
thank you very much
Thank you very much for your help, I will join the group that you say and will try to learn, I have now a multicopter y6 with firmware 2.5.3 and apm1280