sebshep18

hi, im new to this im trying to add a UK map on to a US model of the avic f90bt, iv got the test mode files and the igo8 files on a sd card, i put the sd card into the machine boot it up it copies the files then once its finished it goes away but leaves a green box behind. i then try to go to start all progs then exploror but it seems to crash and i cant close the copy screen down to see the desktop what ever i seem to click either leaves a green box behind it or crashes the system any help would be great also im new to this got the unit yesterday had a look last nite for a few hours and n