Thread: Help in i-go carunit

Hi again
If i use the sd-kart in the carunit, it starts up as i should, but cart is from 2011 and want to upgrade it. Carunit starts up with i-go start screen and load the maps ok. The sd-kard cant be read in a pc, unknown format og damages kart, is the messages...It says nothing about ver. or any numbers. I was told it was i-go8, so hope to put some files on a new kart and then try if it works, otherwise a have to use the old cart, but what are one a normal cart for a car unit with i-go8?? The win logo is on screen to..I dont think it is a Primo ver., but not sure. Nothing on the car unit or on strartscreen..
So im on deep water here..