Maps download twice.??

GE latest version

Yep, appears to so. Just did a firm ware update to my 2497 with the win 10 machine. That went fine after I beat on the win 10 machine to recognize the Garmin drivers. Then thought I see if could see the SD chip and that the latest CNA was installed. Nope just said I needed to update. Well lets see what happens. Bad idea; it's been stuck on 1 hour 4 mins to go for the last 4 hours. Router just a blinking away along with the hard. The Nuvi shows at least two copies NA 2017.1. Knew there was a reason I stay away from GE and use mapupdater. This is Garmin Express v4.1.17.0 by the way; running under Win 10, the 11/15 update version, on an Asus X550ZA with AMD A10 7400P quad core, 8 Gig of ram and a 1TB drive.

Who knows maybe some day Garmin will get GE so it really works.

Express has worked for me for well over 2 years now with only one small hitch when it deleted all the installed voices. If you're having issues you need to look closer at your system.

However, returning on topic, @kganshirt it always appears to me that Express downloads the files once, any subsequent download is simply any additional files etc (eg unlock and authentication) required by the second device. Given that one of your devices is a older 765 and the other a much newer 2597, then the latter would also need many other files as well (junction view, voice files) so it's possible it was the download of that you were seeing, no doubt the Express team can throw more light on it.

Express has worked for me for well over 2 years now with only one small hitch when it deleted all the installed voices. If you're having issues you need to look closer at your system.

It worked just fine for me, too. Except for downloading the map distribution files twice, unnecessarily.

However, returning on topic, @kganshirt it always appears to me that Express downloads the files once, any subsequent download is simply any additional files etc (eg unlock and authentication) required by the second device. Given that one of your devices is a older 765 and the other a much newer 2597, then the latter would also need many other files as well (junction view, voice files) so it's possible it was the download of that you were seeing, no doubt the Express team can throw more light on it.

Nope, that definitely was not it.

First, I did the firmware, voice, text, etc. updates as a separate install on both devices before starting the map updates, so the map updates were done independently of those updates on both devices. (You are correct, there were many more updates for the newer 2597 than the older 765 but they still only took a very few minutes on the 2597.)

Second, my 765 does junction view, 3D, etc., so the large .JCV file and gmap3d.img files were downloaded and updated on the 765 as well as the 2597 during the map updates.

Third, the map download and update took the same amount of time on both devices, allowing for minor vagaries in network performance.

I state again, Express said on the update status screen that it was downloading maps (again!!) for the second device. All the evidence in front of me makes it pretty clear that's exactly what it did.

Is there a setting somewhere in Express that I may have missed or invoked accidentally that controls whether it keeps the downloaded distribution files in case it needs them for a subsequent install or deletes them upon successful completion of the current install? I thought I had seen a number of posts in here, in different threads, that that's how it's supposed to work. It would seem to make logical sense .... but this is Garmin we're discussing. It certainly didn't work that way yesterday.

...ken...

That would be nice, after 7 hours GE was finally done with the update. All is working on the 2497 but with CANT 2017.1 already on the device to begin with GE should never had said it needed the updated map. Took half that time last week to do the 550 with a down load to the laptop only and using map install to transfer. Of course the 550 doesn't use JVC so that maybe some of time difference.

Ok:confused: now I am really confused on this question. Finally got my daughters Nuvi 2555 to do a hard reset! Launched GE and connected the Nuvi after getting the usual screen about adding etc. GE checked and I ok'd some minor firmware updates and then we got the CANA 2017.1 update. Here I was already to for hours of waiting........GE never went back to the Garmin servers, told me to add a SD or select less map, put in an 8 GB SD and 14 minutes later we're done!!!!!!!!!!:D Haven't had the nerve to see if the JVC file updated but the 2555 is up and running. Go figure.

With devices of similar vintage most of the files required would already have been downloaded, which is why the second install was far quicker.

Will be interesting to hear from the Express team why it worked for you and not apparently for kganshirt, since as far as I know this is the default way it's meant to work and you can't change it?

Typically, when updating a second device, or if the map update is run again due to an error the first time, Garmin Express will perform a file verification at the beginning of the download process. During the file verification, the Express program runs a comparison between the files already downloaded on the computer and those on the server. So while it was saying it was downloading, more than likely, it was performing the file verification.

While the nuvi 765 has the additional features like the junction view and 3D mapping, the files will not be the same between it and newer devices. So the newer device may need different files.

Also, it has been reported that the progress bar is not correctly stating the time remaining or showing the progress of the map update. So some of what you are experiencing could be related to that issue. The Express team is actively working on that and we hope it will be corrected in the next release of Express but we have no definite ETA on when it will be resolved.

Lisa

Hi Lisa,

Thanks for the reply. It still raises questions.

1. If it was not downloading the maps again why did it say it was?

2. If it did not actually download all the files again why did it take a similar amount of time to complete (clock and progress bar actual time, not "progress" bar predicted time)? If it takes just as long to verify the files as it does to download them again, why bother?

This computer is not the hottest thing on the market but it's not shabby. It's running a quad-core 2.4GHz CPU, 4GB RAM, and a speedy Samsung 256GB SSD as the system drive. So it seems very unlikely that it was verifying the originally downloaded files for all that time and much more likely that it was actually downloading them again as it said it was doing.

I'm open to the suggestion that the junction view file, and possibly the 3d file, might need to be different for the 765 than the 2597, but I would need some convincing that they actually are. However, they are not so large that they should take more than a few minutes to re-download -- perhaps 20 minutes or so -- not the same couple of hours that the original file downloads took. And I know very well that the City Navigator North America files are the same for both devices ... and all other Garmin devices that support them.

This is the first time I've tried to update both devices on the same day. I typically update one of them if I have a trip out of town upcoming. At that time I'll update whichever of the devices I will be using for the trip. By the time I get around to updating the other one we are usually another map update or three farther along. So I've only been taking the word of posters on the forum that Express is supposed to be smart enough to reuse the files it's already downloaded to update a second and subsequent devices.

It does not appear to be that way here on Garmin Express v4.1.16.0.

...ken...

I think one thing that would help is if the Express developers would change the behavior of the progress bar. Right now the progress bar represents the whole process of the map update including download, verify, install and copy. I think users would be more confident in Express if it showed the progress of each step ... maybe 2 progress bars ... one for the current step and one for the entire process.

Adbuck, that would be very nice.

It does display what it's doing above the progress bar as it's doing it. The suggestion from Lisa is, apparently, that in addition to not trusting its time estimate, you can't even trust that it's doing what it says it is. Eg. It was, apparently, actually verifying already downloaded files for 2 hours rather than downloading them again as it said it was.

They probably should at least code it to tell the truth before they take a stab at coding modern 1990s UI elements.

...ken...