I've only had this tool for a bout 3wks now so the answer to your question is no but would be interesting to hear from someone who has. I am only backing up my software as that is what i says to do in the brochure that came with the tool and i followed there instructions step for step. so with this in mind if my subscription does expire and the tool crashes and this back up software proves to be useless or just gives me limited funcionality i won't be a happy chappie. I mean would autel really do this crafty move on us i mean if  it gets proven it wouldn't look very good for them would it. Let's see what they make of this thread and let's see where it goes and what answers we get i can send them the screenshots of both sd card folders/files if needed so they can see the difference. Oh where are u in the uk? 

 Ok cool, So what you are saying is don't update firmware after subscription has expired?