What I am saying here is until Sygic fixes and makes the app stable it is not the right time to screw around with a new map format.
Which is not downward compatible with other older versions of Sygic.
They just made v15.3.10 the latest full version on the Google store.
Now they come out with maps that will not work on that version or any other version before 15.4.x.
There will be a lot of users that will not be happy with this.
There are a lot of older versions that user's a very happy with and not cannot get map updates they have paid for.
Learn the lesson from MS v8.0 they screwed up big time with those changes.
Now they give away MS v10 for free to make the user base happy again.
I am not complaining but pointing out fact.