Provided that this is the real version, not a fake, you're a great optimist if you think it's already crackedBut I do not know Navon so well. I just know that those devices can use iGO.
P.S. About screen looks just like NextGen screen, but fotoshop-ed, or with some nice branding.
You do not need some special skills for that, for example
Spoiler: Ver
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