I have an N3 here at the shop and i downgraded the software to use the N2 disc . That worked jkust fine , the only thing that didnt work was the touchscreen menu in the top left to change sources. It will not bring up the source menu on the screen , i can only use the source button on the face of the radio . I tried it about 3 times reloading the software . Any help would be great. Thanks Xp800