Sojo40

I am needing to update my nav on my 2005 cl600 it still has the original map in the trunk dvd nav unit. Not sure if the newest 2015 map dvd will work. I was told I needed to install v.10.
Does anyone have this that I can buy please let me know?
Also looking to update the comand unit, It is comand ntg1.
Any info or if you have what I need and I can buy it just let me know.
Thanks.