Mike Lane wrote on Apr 29, 2012:
> I'm planning to buy a set of City Navigator maps for my new Montana 600,
> which are available as a download or a DVD.
>
> I was about to specify the download to avoid delivery delays until I read
> this page on the Garmin website:
> <
http://tinyurl.com/ygk6r96>
> According to this it appears that updates can be obtained for the DVD version
> but not for the download. Can anyone actually verify that this is true? It
> seems such a pointless and arbitrary restriction that I can hardly believe it
>
>
To answer my own question, I telephoned Garmin support to ask them about this
and the answer I got was this:
Yes, it is true that you can buy updates (either one-off, or a lifetime
payment) *if* you buy the original on DVD but not if you get the download.
The explanation (which I'm not entirely convinced by) was that the download
is supplied as a complete image file for the area you specify, which is
downloaded directly onto the unit. The only way (it was said) it could be
updated was to replace the entire file with a new image. The DVD version on
the other hand was supplied as the individual area tiles which are installed
on your computer which are then compiled into the final image by the
installation program also on the supplied disk.
As I said I'm not entirely convinced as I would have thought some update
scheme could be devised for whichever format you chose. However at least
there *is* an explanation and it isn't simply arbitrary as it seems. It's a
very good reason *not* to specify the download version though, as the price
is the same and the only disadvantage of the DVD is the time taken for
delivery.