Change the .fbx file association to blender_to_os.bat. To do this, right-click any .fbx file, click Properties, and change the Opens with preference. Click on more apps↓, scroll down and select Look ...
This section describes how to import 3D Tiles from providers other than Google. The import process for Google 3D Cities in the 3D Tiles format is described here. Blosm supports importing 3D city ...