On the root of the stick you should create vuplus/solo/ directory (when it doesn't exist) means, when on your PC (Windows XP in my case) in explorer you will doubleclick on stick, you will see "vuplus" directory, when you doubleclick on "vuplus", you will see "solo" directory. Afterthen doubleclick on "solo" directory and thats the place, where you have to put files with image.
Simply way is to doubleclick on your BH image zip file (will open in XP) and copy entire "vuplus" to root of your stick.