Avoid map updates or equal to buy a micro SD card and insert it!

I already possessed some TomTom navigation devices. Still in use and the great GO Live 1015 TomTom World (no longer available). Just the unit has in the map update hung and said it was not a card is installed, however, the computer says the update of the map is done successfully and installed and the TomTom support told me for map updates I should purchase a Micro-SD card as new Map updates have an increasing amount of data, while the unit has been purchased only in July 2014.