I downloaded some maps, the unlocked 2012 NT europe map, the venice map and also the Isle of man recreation map.

I got a mini sd card and created a folder called map and inserted the above maps into it.

I inserted the card into my 1300 garmin and it does not recognise the maps. No maps are showing when I go into the menu, choose system then choose maps then more... only the default uk map which is on the main device is showing up.

I also checked the inventory page too but also nothing shwoing except uk map, so what have i done wrong for it not to show any of the additional maps.

the maps on the card in the 'map' folder are as follows.

IOM.img
venice.img
GMAPSUPP.img