How to update VX2

I recently purchased a 2006 boat with a Navnet VX2 plotter/sounder/radar. I'd like to update to the latest software, I haven't been able to find the directions on how to do this or where to download the software. Here is the version I currently have. Also, where can i find the most current/appropriate chart card?
thanks
- Alex

Your unit is programmed to support C-map MAX chart cards. They can be purchased from any C-map dealer. Many Furuno dealers are also chart dealers, so I recommend you ask your Furuno dealer first. Software to program the product and the instructions are located under the SOFTWARE tab under the product page on our web site. www.FurunoUSA.com