The Armada ('04-'05) use the 6.x series disc, and the '06 Maxima uses the 7.x series disc. Unfortunately they are NOT interchangeable. See this TSB Info sheet. Your disk should be pink, and hers should be green. You can verify this. You can get upgrades/additional maps within the series: 6.1, 6.2, 6.3 but you can't jump to 7.x anywhere. '06 Madas have the 7.x as well.vthunter said:My 'mada is an 05 LE. My wife has an '06 Maxima with Nav also. Can I use her Nav disc and put it in mine to update the features that changed from the '05 Nav to the '06 or is it a hardware issue that the dealer has to upgrade? Thanks.