OK, when i read you ,it's easy ...
on the keygen: FID 4647 PID 2 rgnID 0 venID 0.
I put the unlock code generate with my gps id in the "Alpenvereins-POIs.unl".
In the sd card, i have a file GARMIN : gmapsupp.img,gmpapprom.img + a file POI with "Alpenvereins-POIs.unl"."Alpenvereins-POIs.gpi"
I think it's a simple way but i cannot see the poi's in my gps and nor in basecamp
All the same,thank you for all.