Then your content is bad (I am pretty sure), or device is faulty.
If you are wondering how iGO8 can work, and primo / NG can not - very simply:
- iGO8 don't "see", i.e. don't use majority of modern files. Only fbl and poi (and some more not directly map related).
Primo, for example, can not see only fjw files.
NG use them all.
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