Unfortunately all available background maps for my region shows nothing useful. So background image is the must for me.
But I can't view it on some screens: Track view, Project view in contour mode.
Does it possible to add images to these views in any way?
Or maybe more detailed view, such as Google satellite, can be selected as background map?

Found the solution for projects - custom image can be added as background overlay - exactly what I need.
But still don't know how to view tracks over custom/detailed image.