Went to my local MG Dealership for my annual service and asked if they would do the map updates (like they did last year for free). Was told there would be a £125 charge for this!! Fortunately, this forum has saved my sanity. In addition to the aforementioned tips, my problem was that when I inserted my USB stick containing the maps folder (less the two files causing the issues), and went to Settings - System - Map Updates , and clicked 'Ok' at the next message which took me to a menu with three (unselectable) menu options, I just didn't wait a few minutes for the menu to update. I'm so used to things being 'instant'. Having waited several minutes and then checked the options again, all proceeded (slowly) to the system being successfully updated. Perhaps if the official 'Map Update' pdf had explained this, I wouldn't have wasted unnecessary hours of my time. I was beginning to thing it was some sort of ruse by MG so end users would get frustrated and get their dealerships to do the update at £125