[mkgmap-dev] Maps no longer working after firmware upgrade?

Fri Nov 16 17:13:32 GMT 2018

couple of thoughts

I've experienced the devices remembering parts of the map structure and
 being in a bit of a mess when I've used the same map but copied to a
differently structured SD card. Maybe the newer firmware has a
different idea of the internal structures. So, suggest you make a new
map and try that, rather than one the device has seen before.

I got a new Etrex 30x a few weeks ago and upgraded the firmware from
2.50 (as installed on purchase) to the latest: 2.90 (using the garmin
quickstart windows program). I've not had any problems with mkgmap
generated maps.

Ticker

On Fri, 2018-11-16 at 17:48 +0100, Felix Hartmann wrote:
> are you sure you're not sending maps with MapInstall 4.2.0? 
> Meaning are you sure you did not destroy the .img files using
> Mapinstall 4.2.0? Use mkgmap itself to generate a gmapsupp.img (of a
> non unicode map just to be sure - maybe the firmware update crashes
> unicode maps but I've not heard of that for etrex 20/30)  and check
> if that works.
> Can you not downgrade the firmware?
> 
> On Fri, 16 Nov 2018 at 17:45, Gerd Petermann <
> gpetermann_muenchen at hotmail.com> wrote:
> > OK, that is probably nothing that we can fix in mkgmap :-(
> > 
> > Gerd
> > 
> > ________________________________________
> > Von: ael <law_ence.dev at ntlworld.com>
> > Gesendet: Freitag, 16. November 2018 17:41
> > An: Gerd Petermann
> > Cc: mkgmap-dev at lists.mkgmap.org.uk
> > Betreff: Re: [mkgmap-dev] Maps no longer working after firmware
> > upgrade?
> > 
> > On Fri, Nov 16, 2018 at 04:15:42PM +0000, Gerd Petermann wrote:
> > > I think I had those problems with routes after changing the map.
> > Did you try to create a new route?
> > 
> > Well, as there was no map displayed, I couldn't select a point and
> > try
> > to get a route to it. What I did do was go to a Waypoint and try to
> > route to that. It failed as I said complaining of no routable map.
> > 
> > Again, as I said earlier, what did seem to work is to select a
> > recent
> > find, and route to that. It showed a route which was following an
> > OSM
> > map complete with street names. Of course, the map that it was
> > following
> > was not shown. But, again, as I said, maybe that was out of some
> > cache
> > rather than using the current map. I had no way of knowing. Perhaps
> > the
> > cache held the "track" and the list of names; as in the route
> > display,
> > or whatever that menu option is.
> > 
> > ael
> > 
> > _______________________________________________
> > mkgmap-dev mailing list
> > mkgmap-dev at lists.mkgmap.org.uk
> > http://www.mkgmap.org.uk/mailman/listinfo/mkgmap-dev
> > 
> 
> -- 
> Felix Hartman - Openmtbmap.org & VeloMap.org
> Schusterbergweg 32/8
> 6020 Innsbruck
> Austria - Österreich
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