Quote Originally Posted by tiltuser1234 View Post
I am currently running 4.5 on an '08 wing with non-NT Garmin Topo US running. I purchased the Topo USA dvd and unlocked and installed it onto a cf card from my laptop. If I update the firmware to 4.6 and then reinsert my CF card with the non-NT topo maps will they work as before or will I need to purchase new NT maps? Thanks!
Firmware Ver 4.60 will run both NT and non-NT maps on your Garmin GPS.

It will also up-date the Canadian GPS unites but you will no longer have French language, just English for voice. Nothing is out for any other language.