Sometimes the map/navigational updates don't work correctly from the contractor Hyundai utilize to write them. This happened several time with the MapnSoftcompany, who writes these updates in the US for Hyundai and Kia. MapnSoft generally picks up on the problems quite quickly and issues a new version but it does and has happened from time to time.
If a data error occurs, then I certainly wouldn't want them to force it and brick a head unit. Pretty good indication there's a possible update issue with the new navigational software they have available.