I may have access to the 2010 nav discs in an 05 RL to make a "backup copy"

Is this as simple as using say MagicISO to create an ISO image and then burning that with a dual layer drive? I can't do a direct source disc copy since I don't have a dual layer burner.

 

try using imgburn at low speeds i believe 2.4x. use verbatim dual layers -r. then, install with original and then try the backup. lemme know, im curious too. as of now, only 4.6 versions will work with backups.

 

Let me know also!!!

 

I think the other complication may be that the Canadian cars apparently are given two discs with each updates. The 2011 disc currently on sale for the US is not the same as what Acura Canada offers for the Canadian update, which is a two disc set (and not on any sale or discount - boooo!). I believe the US map only has limited "border city" mapping for Canada.