3590 LMT speed limit + sign never disappearing

Hi,this is my first post on this forum.

I bought 3590LMT few days ago, and I had City Navigator Europe 2013.10 NTU map on it. Speed limit works as it should.

Then, new firmware came out, and I update device with it. Also I update my device with new map, City Navigator Europe 2013.20 NTU.

Then I went to my short trip and I notice, that there is no speed limit circle with auto-updating speed in it, only red circle with + sign in it. Situation is the same on highways or city streets. If I press + sign, there is written speed limit for that road which I have to correct. But when I press cancel, + sign remain. If I press some value, it stays in that corrected value till another street, when + sign pop up again.

I read this forum,and there is speed.db (User or Custom Speed Limit file) file in .System\SQLite\SpeedCorrections\ and I delete it (first I backed up it).

But there is NO speed.mdb file (Garmin speed limit file) in the folder (as I understand there should be both of them).

Is there a way to manage this?

I'm just downloading City Navigator 2013.20 NTU map again through LifeTime Updater, but I'm not sure does that will correct my problem.

Any help, please!

Best regards