hi I'm just in the process of purchasing a Nissan Xtrail Colombia 2006 plate. it is being supplied with its standard issue dvd from when the vehicle was first made so I decided to do a search for dvd based software updates which resulted this company being shown in the search results. try this link Latest 2013 Sat Nav Disc Update NISSAN X6, X7 AND X9.
please note I have not ordered the software yet so, I cannot confirm if it works or not. I will be getting my garage to order it and install it! but to be fair for the money I am willing to take a risk it is only a relatively small amount of money.
I will make an addendum how this post when I take delivery of the vehicle sometime next week.