Just bought and downloaded the new map. it is 252Mb instead of my original of 139Mb. It also came with lots of safety camera files and others to a total of 70 items. I installed these into the TT1 and checked the version no. and found it hadn't changed. TT Home showed that it had both the old and the new map files. After making sure I had a copy, I deleted the old map file using TT Home, the TT1 now reports I have v675.1409 of UK and IE plus major roads of WE. (WE seems to stand for Western Europe).