Hi all,
I've gone through and read a bunch of posts, learned quite a bit, but am still somewhat confused. I have an N1 H/U and brain (with original 40M maps) and have the opportunity to upgrade the brain to an N3 (with 60M West disc). I understand N1 - N3 H/U's are interchangeable with the brains. When I connect the N1 H/U to the N3 brain and insert the 60M disc, the screen prompts an error message telling me to "Please insert the correct disc". When I insert the 40M disc, the navigation and screen display normally. I checked the OS (V 1.02) and have also reset the H/U after connectin