Please, how I do that (upgrade to 2.0) on Steam? It seems there is no update nowhere...
If you have the Steam version it should update automatically. Unfortunately Steam doesn’t mention anything on the product page.
You can check your scenery update status by having a look at Charles de Gaulle airport : if you have a ground polygon and 3D static aircraft, then you have the V2.0 release.
If you don’t have the Steam version but purchased from FranceVFR please contact them.