This way, navigation is installed without a problem. Apparently the problem was in the Pongo skin because after installing when I changed the original folder UX with that of Pongo again the screen became black, And when I again return the original folder everything is fine. But there was another problem. I Added Branding zip. Containing photos for different POI categories. The Pictures are displayed on the screen but after restart they disappear, and again the original pictures appear.
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