\Storage Card\Garmin\sw.unl is Garmin XT software unlock code
\Storage Card\Garmin\gmapbmap.img is base mapset at level 30km to 1200km
\Storage Card\Garmin\gmapsupp.img is detail mapset no.1 at level 3m to 30km .
\Storage Card\Garmin\gmapsupp.unl is unlock code for mapset no.1
\Storage Card\Garmin\gmapsup2.img is detail mapset no.2 at level 3m to 30km
\Storage Card\Garmin\gmapsup2.unl is unlock code for mapset no.2
\Storage Card\Garmin\gmapprom.img is detail mapset no.3 at level 3m to 30km (can't delete in Garmin XT menu)
\Storage Card\Garmin\gmapprom.unl is unlock code for mapset no.3
How if I have more than 3 map? after gmapsup2, I tried to put gmapsup3. and it's not working.. lol