Hi all, learned a lot here and have updated my firmware with this new found knowledge. I have an MkIV (v31 with night mode) with 2002.1 OEM nav disc and I was able to burn a backup using imgburn. It worked no problem. I have been reading about the problems with reading 2011 nav discs, both OEM and backups. As a test, I downloaded the 2010 HIGH and the 2011 HIGH iso's and burned them. These did not work as backups. The 2011 caused the nav to say something like "reading disc, please wait a moment", but that moment lasted over 20 min before I gave up. The 2010 was not even readable by the nav. I burned using slowest possible on my laptop (4X) and used single layer memorex discs. Again, I was able to backup my 2002.1 OEM no problem. My concern is that when I buy the 2011 OEM I won't be able to back it up. I don't wish to use the original in my car.

Any ideas?