Junction View Files

Are those files on your SD card or in memory on the 1450?
2014.10 update has installed the JCV file to my 1450.
The file names are..
D1279180A and D3153100A
Before the update, I deleted..
SDcard\garmin\JCV\D3153090A.jcv
SDcard\garmin\JCV remains empty after the update.

{edit} flyoffacliff, I suggest you listen to spokeybob rather than what follows here in this reply. I've checked and see several posts from you in the recent past talking of lots of tinkering you've done with your nuvi so there's a lot in your original message in this thread that probably should have been mentioned. Whenever possible, try to stick to one thread rather than start new threads that requires you to repeat all that you've said earlier.

You say the 1st is for the 2013.40 map.

I see one reference from Google suggesting the 2nd is the Junction View file for one of the eariler 2012 maps although I worry it may be the new default jcv file for the new 2014.10 map which you may want to keep.

The third is a checksum and can always be deleted.

Before doing anything with these three files, answer some questions from us and wait to see what we think is going on.

Assuming you've updated to the new 2014.10 map, I suggest you remember where the files are inside your nuvi, then make a computer backup of the files before starting any tinkering. The question remains why two jcv files are there. When you update a map, the old map files and the old jcv files should have been replaced by the new ones. When you go to your Map Info page, what map(s) do you see available? The only reason I can think of for seeing these two jcv files to be on your nuvi is that you have a full or partial City Navigator of older versions in addition to the new map or possibly that you've installed City Navigator Europe or some such thing and we may have more issues to resolve.

Did you ever create a supplemental map in the nuvi or on a SD card used by the nuvi, maybe because the full North America didn't fit during the initial update--or install a City Navigator other than the North America version?

Go and look inside your nuvi and in any SD cards that have been installed in your nuvi in the past and look for all xxxxxx.img files. Tell us what you have. There should be a gmapprom.img, gmapbmap.img, possibly a Time Zone img file, possibly a gmapsupp.img or some other gmapsupxx.img. Tell us their file dates if they have a date, their size, etc.

Assuming you have the new 2014.10 map installed, you should have a DxxxxxxA.JCV file associated with the map file and you will either want to keep this or replace it with the new large JCV file that you'll manually download and install. In any event, assuming we're talking about your nuvi 1450LMT, you'll do better to replace the default jcv file with the large (750MB-ish) file on a SD card for many more and better quality JVs. But before tinkering with JCV files, tell us about your .img files. Something is odd with what you're seeing and you may have files eating up space on your GPS that will limit future updates or otherwise possibly cause some grief some day.

Please also confirm that we are talking about your nuvi 1450LMT or tell us what model you have now.

Spokey, are you saying that you have two DxxxxxxA,JCV files on your 1450 after updating to 2014.10? Maybe there's something going on with your nuvi 14xx series that's different from what I expect. If your 1450 with 2014.10 is working well and showing JVs, I'll let you take over helping here since you both have 1450s and I've never worked with one.

In any event, do you plan to disable the default jcv file that came with your 1450's 2014.10 and manually load the large JCV file or will you keep the default?

Yes. I do have the two files. I watched them download earlier today.
I am going to keep the default files I have...
I used the map updater that I have in my Garmin folder on my pc.
Another thing that I do is delete all my Favorites, trip logs and Custom POIs before I update. And the old JCV file that I mentioned earlier.

Why does Garmin have to make everything so complicated? Their buggy software has created all kinds of problems. Is their anyway to start over? Should I just delete the map and junction view files and start over?

Sorry, I thought it would be better to create a separate thread. Some forums don't like it when you go off topic. What else should I have mentioned in this thread?

I think so. (not 100% sure)

I just installed the large file from the garmin website (D3060100A.JCV), so now I have that in addition to what I have in the picture above.

If their is no need for it, then why is it their?

Yes, I have installed partial maps before I fot the SD Card.

Internal .system folder: http://oi41.tinypic.com/2qsxwxs.jpg
SD Card map folder: http://oi41.tinypic.com/2vki9zq.jpg
No junction view files on sd card.
Sd card Garmin folder: http://oi39.tinypic.com/ir5kd0.jpg
Updated view of JCV folder on internal memory: http://oi40.tinypic.com/34qwzrl.jpg

Yes, this is the 1450LMT.

Thanks for your help.

I have no idea why your JCV files are different than mine.

I have no idea how you can have a 46089KB JCV file with no Modified Date showing.

I updated my 2460LMT with MapUpdater, directly to the unit's internal RAM. The JCV file is D3191090A.JCV. It is reported as 453,916 kb.

Spoky,

The file you deleted D3153090A.jcv (about 25mb) was a "lite" JCV for the CNNANT 2013.4 map. I presume It was there from your last map update.

The file you now have named D1279180A.jcv (about 769.5 MB) is the largest full screen JCV for 2014.1 and was likely just placed there by the Lifetime map update process. That's the same JCV file they put in my 755.

Based on the file name, I suspect that D3153100A.jcv is the "lite" JCV update file for 2014.1

It looks to me like the process updated your original "lite" JCV for 2014.1 "lite" JCV and also gave you a "full" JCV version for 2014.1

So is sounds like you must have both "lite" and "full" versions on you device for the 2014.1 maps. I suspect the "lite" version is now redundant.

That is the split screen version JCV for 24xx, 25xx, 34xx, 35xx models and maybe othere as well.

To many models and variants these days to keep up. LOL

Typo:
I had deleted the Lite version, D3153090A.jcv, in February and installed the large file, D3060090A.
This morning I deleted the D3060090A before updating.
Now if I add the two new files together 769,467 and 24,119 I get 793,586. That seems like a few new views more than the old file of 792,981.
Any thoughts?

I'm not sure what you are asking. But I do have some thoughts. I don't know if adding the size of the small JCV and large JCV has any meaning in terms of enhanced content. I always thought that the small JCV files were always just a subset of the large JCV files for smaller memory devices.

I also have no insite as to how the GPS might behave when it finds more than one JCV file that is compatable with the currently selected maps. Does it look in both? Does it just pick one at boot time and use it? If so, which one? etc. I simplly stick with the large one.

I've always used only the Large JCV files in a 7x5 and I did notice that the large JCV for 2014.1 is about 5MB larger than the Large JCV for 2013.4 so perhaps more views have been added. In the grand scheme of things 5MB is pretty insignificant growth of a 750+MB file. I don't get excited about it. LOL

I updated to an SD device simulating my 1490. I got two files one large and one small. The large file is D1279180A.JCV. I deleted the small file because it is the file normally supplied to the 1490 with little information. The D1279180A.JCV file and D3060100A.JCV are exactly the same size. The D3060100A.JCV file is the one available for download separately.

Apparently if you have enough room on the device you are updating to you will get both files. A large and a small. Don't know why the difference in file names since they appear to be the same file.

I am still really confused with my problem. Is their even anyway to test Junction View to see if its working?

jjen

This is what mine show.
D1279180A = 769,467
D3060100A = 787,935

The way to test JVs is to create a route that uses JVs--a good guess is to select routes that include interstate highway interchanges, and exit ramps. Then either in real-time or in Simulator mode, drive the route and see if JVs appear.

My computer shows both as 769,467 KB

Create a route as above and give it a Go. The route should compute. Press the Green bar at the top of the screen. Turns will be displayed, press any one. A map and instructions will be displayed. Press the down arrow until Junction View at the bottom of the screen is highlighted. Press Junction View. The view will show and from the large files will appear as "photo realistic" as it would appear at the junction. You can continue through the route by pressing the down arrow and Junction View when highlighted.

This is the way it is with a Nuvi 1490. The 1450 should be the same.

Ah, that method is so much better than running a route either real-time or simulated since it'll answer the question in a tiny fraction of the time compared to my method.

Thanks for the reminder.

I see where I went wrong.

If Garmin has improved their map update software to automatically download the large JCV file when you use a SD card with sufficient space, that is a significant improvement and I applaud them for adding that capability.

This apparently works on the 14xx model nuvi's, but did not work with my 855. I used the Map Updater to update. Did you use Garmin Express?

I used a 8GB USB Flashdrive to simulate my Nuvi 1490. See cloning on this site. When I logged in, it started to use Garmin Express. I canceled out and went to Mapupdater and selected US and Canada to get what I wanted. With this I got two JCV files, one big and one small. I copied the map files that I needed to my 1490. I copied the large JCV file to my SD card. The JCV file works great.

I also downloaded the D3060100A file to compare it to the file I received from the update.

Had downloaded the large JCV file and installed it on a SD card to Garmin/JCV folder on the 855.
I can say it does not work. So I have now renamed the original small 24.119 kb file in the Garmin folder.

Even on my 3790 with the large file I still got a split screen

If the new large jcv file doesn't work with the new City Navigator on your 855, something is wrong since it works on mine and for others: did you disable the nuvi's small jcv, after installing the large jcv and disabling the small jcv did you "turn off," then remove the battery and replace the battery to force a reboot for the 855 to see the new file and file location, etc.

If you want to pursue this, the large jcv file will work with an 855 and the results will be stunning.

When you stated the large jcv does not work in your 855, how did you reach that conclusion?

The 3760 has a 4GB capacity. It gets a very, very small Split Screen JCV file (D3192090A.JCV - 158,691) installed with the map.

The was NO .unl file.

This small JCV file provided by Garmin for the 3760 does not have enough JCV content to make it useful.

I downloaded and installed the Large JCV file on the 3760. It works great, just as it has for all previous updates.

On a previous update, I downloaded the full Split Screen JCV file provided for the 3790 and used it to replace the very small JCV file which Garmin chooses to provide for the 3760. I did not do so on this update as I do not like the Split Screen view on the 3760. I prefer the Large JCV file.

Hello CraigW

I have been monkeying around so much with the 2 GPS's in the last 24 hours that I am pretty sure that at some time or other I had popped the battery on the 855. I will try once again though.

I just did a highway run with both GPS's set to a destination point, the 855 did not show any thing except highway while the 3790 showed a split screen.

Yes, I did rename the small file to filename.jcvdisabled in the 855 memory.

The help and advice on this forum is just amazing!!!!!!!!!!!

Edited at 4:45pm
craigW, I redid everything as per your suggestion on the 855 and did a simulator run instead of driving.

Works perfect now and as you say it is AMAZING!!!
Thanks for your input.

I moved all the JCV files off the memory except for the first one (the large one). Is this correct, or should I have left the the small one their too.

In other words, does the large JCV file contain everything in the small file?

Should I disable the small one, or do I need it in addition to the large one?

----------------------------

Also, I have the following zip files in the root directory of internal memory:

D143400
D165900

Do I need these.

Do they really have an extension of .zip?

I was surprised, too, when I saw zip files on my nuvi 2460 since no other Garmin device of mine has zip files.

My 2460 shows two Dxxxxxx.zip files, D165900.zip and D166000.zip and they have a Text folder filled with a gazillion glx files. I have no idea what they're for so for now, I'd be very careful about thinking about removing them.

Looking at a couple glx files with Notepad, it appears that they're somehow related to Safety Cameras! I wonder if they're part of the Trial or Paid Cyclops Safety Camera database. My 2460 came with the free trial pre-installed.

I show only one zip file D165900.zip.Once you click on it you get text folder with the glx files in it.

Should I email Garmin support and see if they know?

I guess I will leave them for now.

Some updates downloaded via WebUpdater (or otherwise) as distributed via compressed .zip format. Upon the next boot cycle (after the update), these are extracted and then the contents are moved to their proper locations on the unit. The .zip file(s) are then -usually- deleted after the boot/update process, but not always.

The file names of these .zip files correspond to a particular part number. The part number can be traced to a description of the part if you look through the GarminDevice.xml file on the nuvi. Since the GarminDevice.xml is specific to your model, part numbers may not coincide with other Garmin models. For instance, part numbers on my 3490 may or may not match with those on your 2460.

In my experience though, I'm pretty certain the *.glx files you are seeing in the .zip archives are Garmin text file updates.

The .zip files I personally feel can be safely deleted (or archived on another drive if you feel safer) if you've run WebUpdater and it shows that no updates are available for your unit (all updates have already been extracted & installed to the unit).

I have downloaded the new map and JCV files and used them on my last trip to LA and back.
The JCV files were on the Garmin and the map was on the card. Since I have a built in Gps in my car I could compare the two systems.
The dash system showed each intersection until one drove through them while the Garmin quickly showed the intersection and then went back to route. I like the dash system for it gives me time to look at it.
Since having both JCV files on my Garmin do not interfere with its operation I will keep both.

As soon as I received my 2460LMT I did a backup of all files in its virgin state.
I checked this backup for any zip files and there were none. I also received the Trial Cyclops Safety Camera database. I see one file present for that in Poi folder named "USCanadaCyclopsSample.gpi" at 252KB.

I have since deleted that Cyclops file and use the Factory' RedLight and Speed Camera files.

After numerous map & firmware updates I checked for .zip files on the 2460 that was backed up on 6/12 after installing 2014.10. Again there are no .zip files on the unit.

As Dorkusnimrod stated, the .zip files are USUALLY deleted, but not ALWAYS. Perhaps in your case they were not deleted.

Before map update
D3191080A.JCV - 458,749

After Map update
D3191090A.JCV - 453,916
D3191090A.UNL - 1

My unit is one that had to do a firmware update before I could updated my map because of a problem at Garmin.
The unlock code may be something to do with the problem Garmin had with this unit and the new maps.

Also, did a sim. and the JV looks different, not as much like the original exit sign as before. Only did this at one exit so will have to see others before I can tell what is missing.

I will keep my original JV file as I love being able to see the route and the JV at the same time and the JV is on my unit till I pass through it.

So if they are still their after restarting the unit, I can safely delete them?

This to me is much to do about nothing.
I uploaded the latest map onto my 1490 and there were two JCV files on the Garmin and the map was put on the SD disk.
I took a trip to LA - Phoenix and back and found that JCV worked fine and I never wondered which file it used. My problem was that the Junction View was not displayed long enough. My built in GPS showed the junction until I was in it and Garmin showed it several seconds.

I would say you can safely delete them.

BEFORE YOU DO, make a backup of the files and make note of the folder they are in.

As in CraigW's case he stated he had two .zip files, D165900.zip and D166000.zip.
After doing a Google search on these files I discovered the two files are most likely updates he did to either the help files for the language text files, the keyboard files, the text translations, and the traffic text. The autor did not identify which file numbers applied to the varios categories.

http://www.poi-factory.com/node/29999

To satisfy your curiosity write down the Zip file names and do a google search to see if you can identify what the files are for. Hopefully you may get a hit and learn what they are.

Okay. Thanks for your help everyone.

What is a JCV File?

that contains all the pictures of the highway intersections.

I noticed this on the last update about the glx files. Changes made from version 2.70 to 2.80:

Fixed an issue that prevented the device from booting up due to the presence of empty or corrupt GLX files.

The comment seems to be from WebUpdater, but my question is: what are .glx files used for?

I don't find them on my 765T but they are on the 2595. They seem to be files in tutorials.

If I were to describe them in the Glossary, what would that description be?

A user on another forum posted that "these GLX files are graphic files used to present the text on Nuvi Screen".

I don't understand how or where he got his information or what he is trying to convey, however his is the only online hint that I was able to find.

i updated to the 2014.10, then i deleted the files in my jvc folder i got the new large JVC file then put the large jvc file on my sd card's JVC folder and ran the simulated trip to the casino all worked great no troubles!!

PS i deleted files after i made copies
now lets hope garmin didn't put out a buggy map im leaving for the grand canyon Monday and ive read there were problems with roads that it directs you to "dirt instead of blacktop"

There are two things to watch out for:

First, for now, you can not take SR89 from Page to Bitter Springs, so if you're coming from the north in Utah in the Zion/Bryce vicinity, either drop down from Kanab onto SR 89A or plan on the detour through Tuba City:

http://www.azdot.gov/us89/

Second, the problem routing onto unpaved roads has only been described when trying to access the North Rim of Grand Canyon. If you ask your nuvi and map to take you to the North Rim and it doesn't direct you on SR67 from Jacob Lake (stop at the Lodge and buy a cookie!), make sure you ignore the nuvi's routing and do take SR67. The last word I heard is that it's desirable to have a full tank of gas so as to avoid needing to buy gas at Jacob Lake or the North Rim, but if you do need gas, the store at the North Rim may still be a bit cheaper than the gas at Jacob Lake.

And please remember that Fire Danger in AZ right now is high and fire restrictions are in place. Be careful and have loads of fun.

PS--there's a new casino (Twin Arrows) east of Flagstaff just off I-40:

http://www.twinarrows.com/

Interesting, if you look at the .gpx files in the text folder you will see there are 3 files for each language. My 2460 displays:
en_GB.glx= 528 KB
en_GB_PRX.glx= 5 KB
en_GB_TRF.glx+ 1580 KB

I still have no idea what the individual files do other than provide text for the various languages.
Maybe the 1580 KB file has graphics.

My 2460's glx files can be opened with Notepad or I expect, any text editor. Some seem to be related to Safety Cameras.