In the stick tread [Only registered and activated users can see links. ] (all members of this forum must read it, as the others stick treads), I found this link [Only registered and activated users can see links. ] that must answer the most of your questions.
Also observe that your difficulty was predict, there are no way to Know what type of file is offer if the uploader don't entirely identify it:
In: [Only registered and activated users can see links. ]
About your type of device, install the files will not work if your device not supports it's feature. For example, a Nuvi 1490 will not support voice recognition, don't help you install this type of file! More details in: [Only registered and activated users can see links. ]
A big hug! Hope been helpful!



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