Assuming the following situation
On the SD card
1) Biffile (ttgo.bif) copy it from internal to SD card.
2) The map Argentina_and_Uruguay_971_7520
maps-v9xx-f179/970-map-collections-only-t18704.html 3) activation using Fast Activate.
noref.php?url=http://linkcrypt.ws/dir/m24dq269u7183k4Unpacking on Desktop.
4) Copy "FastActivate.exe" to your TomTom device Twice Internal AND SD-Card in the root.
5) Run "FastActivate.exe" on SD Card.
Select 2.
If you have the latest navcore installed via Home you have to patched it.
Run "FastActivate.exe" Internal.
And choose 3
(Be sure you have Internet connection).
6) Done