Junction view and lane assist update

So as I take it, if I buy the North America map package, the GPS will work in US but won't have the J.V. nor L.A. feature. Is there any way to be able to get them together with the map package for my unit?

I don't know if you can legally, that is through Garmin, get the JV/LA feature for "add-on" maps but I can give some technical details.

The JC/LA information is located in a .jcv file in the \.System\JCV folder in your nüvi. The filename varies by the map product and version.

Map update downloads do include the .jcv file (in the temp folder after downloading) even if you only save the maps to your PC so if you have a lifetime map update subscription you can get the file that way.

Note: .jcv files can be large so it's not practical to email them.

Thank you for your answer!

I have the lifetime update but only for European maps, which are preloaded.

So if I get it right, I could buy the North America map package and then get the JCV file from someone who has the NA maps preloaded with the latest update and the unit then loads the JV/LA features from the file automatically if I copy it into certain folder on the memory card?

And one more thing, is it possible to completely separate the European and North American maps, I mean, can I have two SD cards with each map set, that I would plug-in depending on the place I want to use? Or do I have to delete one map set to be able to use the other one?

So if I get it right, I could buy the North America map package and then get the JCV file from someone who has the NA maps preloaded with the latest update and the unit then loads the JV/LA features from the file automatically if I copy it into certain folder on the memory card?

I think that'll work but am not 100% sure. I'm trying to figure out if it'll work myself.

https://forums.garmin.com/showthread.php?t=19245

I mean, can I have two SD cards with each map set, that I would plug-in depending on the place I want to use?

I'd leave your preloaded maps (for Europe) on the unit and load any additional maps to a large capacity SD card. You can have multiple map products on a card (I have 4). The trick is to rename the files as Garmin;s software will always write a

GMAPSUPP.IMG file to the \Map folder on the SD card.

overwriting the existing (if any) one.

Rename GMAPSUPP.IMG to GMAPSUPx.IMG where x is a digit from 1-9.
For example I have

GMAPSUP1.IMG
GMAPSUP2.IMG
GMAPSUP3.IMG
GMAPSUP4.IMG

on my card.

BTW I incorrectly stated that the Lane Assist data is in the .jcv file. It's actually in the map data itself so you'll have that.

So if I get it right, I could buy the North America map package and then get the JCV file from someone who has the NA maps preloaded with the latest update and the unit then loads the JV/LA features from the file automatically if I copy it into certain folder on the memory card?

I can confirm that it'll work on a 1490T with v5.30 firmware.

For details see this post.

https://forums.garmin.com/showthread.php?goto=newpost&t=19245

Of course you still have to find someone that'll provide you a copy of the .jcv file.

Thanks a lot! I will try my luck.

I was in the states last November, using US maps bought on DVD (and eventually transferred to a SD in my Nuvi 3790T, I hope they have fixed the USB download bug! see other threads.)
You can download all or just the states that you are in.

I can concur that you do not get junction view nor lane assist.
You also do not get the 3D mapping images that I get here in the UK.

they may help in cities like chicago where you get several layers of roads, and obviously no gps lock except for the upper level.

I did not try to obtain the extra files, since it took me so long to get any files working in the first place!

( I also purchased the Chicago city explorer maps, they were useless no better than my ipad, you need a good satellite lock to get any public transport information, difficult in my hotel room, and often on the street, impossible whilst on the metro!)

Steve

Map update downloads do include the .jcv file (in the temp folder after downloading) even if you only save the maps to your PC so if you have a lifetime map update subscription you can get the file that way.

Stuartmw, thanks to you, I know how to get the .jcv using the fake-nuvi SD method, and I love that method. But I would like to be able to use the method you give above too. However, after installing Full Coverage of North America to my computer, and checking the box “Leave installation files on my computer”, I cannot find the .jcv file in my temp folder.

I am running Windows 7, so the temp folder that Garmin writes the installation files too is:
C:\USERS\%username%\AppData\Local\Temp\IMG

The .jcv must be inside of some package. I looked in the .cab files, but didn't find a file name that looked like it could be the .jcv (DxxxxxxxA.jcv), but that doesn't mean it isn't there somewhere. I even re-downloaded to assure CCleaner hadn't deleted anything.

Am I missing something?
Can you give me any other information to work with?

Thanks, Lilla

The .jcv must be inside of some package...

No, the map updater saves it in the TEMP folder but at that point the .jcv is not complete. The program makes modifications to the downloaded file and writes that to the nuvi. Once the map update is complete the downloaded .jcv is deleted but the IMG folder and files in it are left behind (no idea why the .jcv isn't as well).

In short you need to use the .jcv written to your "fake" nuvi drive. If you created a full map installation that .jcv contains everything you need.

I hope that helps.

hi i have the garmin nuvi 2517lm advanced series.on the box it says it has active lane guidance with photo real junction view and real directions.im in uk and have used the sat nav on an a road but none of the above came into action.do i have to set something up on the satnav or is it automaticaly on anyway?how can i find out if i have it?thanks in advance

You’ve posted this in the Garmin Connect forum which has nothing to do with your query. Sorry but unfortunately as yet there isn't a forum here for device issues like this. Please contact Product Support

Alternatively try http://forums.gpsreview.net/categories/garmin-auto-forum-garmin-nuvi-forum or http://www.gpspassion.com/forumsen/forum.asp?FORUM_ID=172&sortfield=lastpost&sortorder=0&whichpage=1 where you will get help from experienced users.