That is the latest version, for the Duo 2.
You now just need to download the correct Blackhole image, for your receiver:
http://www.vuplus-community.net/board/threads/black-hole-3-0-3-h-kodi-vu-duo2.32202/
You might want to backup your channels, and bouquets, before loading a new image:
Use Dreamboxedit, or Dreamset, to back up your channels, and Bouquets:
http://www.vuplus-community.net/board/forums/vu-tools-settings.10/
Using Dreamboxedit, set up a new folder, on your PC desktop, and call it settings, defualt name, and location.
Once loaded open the dreamboxedit program.
Go into Tools, Options, and enter your receivers IP address, the the Test IP Connection option.
If it's working then click save, and go to File, Fast FTP Download.
Then click save, and your channels, and Bouquets, should be saved in the settings folder.