2012.20 JCV file size confusion

My 3970T has a 237mb .jvc using NT 2012.10 3D
I have not updated to 2012.20 yet.

Currently JV is non-existant on any part of the NJTP or GSP in New Jersey. I travel all over the state and not once has JV shown up.

My Navigon 8100T was perfect......

My Navigon 8100T also used NAVTEQ maps and their version of Junction View worked at EVERY exit I cam across.

Garmin is FOS.

Loaded NT 2012.20 and now Junction View is working as it should.

From Garmin (part of email chain):

When I said, "it must be", I wasn't taking a guess at what the issue was. I was stating the junction view file size must be limited due to memory constraints. Yes, I agree that your unit has plenty of internal memory. Unfortunately, the junction view is less in size now. As for support, we are not abandoning it on our older units. I do not understand, "lifetime only appears to be 3 years". Had you bought the LMU when it first came out, you could still be using the LMU for years down the road. The mapping is the same, it just increases in size with each update. As that happens, it reduces the internal memory of the unit. In order to prevent the memory from running out quickly, the junction view size was reduced to accommodate the maps. I completely understand the frustration with the junction view. There isn't anything, at this time, that can be done to rectify the issue though. The smaller junction view is intentional, not accidental. Please let me know if you have any other questions. With Best Regards, Justin MaProduct Support SpecialistAutomotive TeamGarmin International913-397-8200800-800-1020913-440-8280 (fax) Att: Justin Ma, Associate #6024www.garmin.com Additional solutions may be found at http://www.garmin.com/garmin/cms/site/us/support/searchsuppo...

Original Message Follows:------------------------Don't you know? (why JCV is smaller) I have lots of room on my 765T based on looking at free space on the Garmin internal memory, and if I adjust for the size difference between the current map on the existing IMG file and what I understandthenew IMG file is, and considering the size of the JCV file there is still significant free space on the internal system. Can you please advise specifically on the 765T, and not "it must be". Garmin reviews on the forums are suggesting Garmin is abandoning support on any but the newest models. I am certainly glad I did not buy the lifetimemaps, as lifetime appears to be only 3 years if my understanding of current support is correct..

Here's my testing on this JV file issue. I tested all three files mentioned below on both my 765T and my 3790T using the route also mentioned below. Note that using the GarminLifetime Updater, the smallest 51MB file was installed on both units, both of which have ALOT of free memory.

For the 765 sw v4.00
1. 51MB file - 0 Junction Views, aspect correct
2. 152MB file - 11 Junction Views, aspect incorrect
3. 446MB file - 15 Junction Views, aspect incorrect

For the 3790 sw v3.60
1. 51MB file - 0 Junction Views, aspect correct
2. 152MB file - 11 Junction Views, aspect incorrect
3. 446MB file - 15 Junction Views, aspect incorrect

For the 3790 sw v4.30
1. 51MB file - 0 Junction Views, aspect correct
2. 152MB file - 11 Junction Views, aspect correct
3. 446MB file - 15 Junction Views, aspect correct

When I updated the 3790, I made changes to the GarminDevice.xml file to prevent the updating of the unit software to v4.30. It could be that the installer is taking the unit software version into consideration when installing the particular JV file since as you can see above with the 3790 running sw v3.60, the 152MB & 446MB JV files are incorrectly formatted. Now why the smallest JV file was installed on the 3790, I don't really know...maybe the installer is polling the actual sw version of the unit (it DID still have v3.60 on it at time of installation) instead of simply polling GarminDevice.xml for the true unit SW version

It maybe likely that the incorrect formatting is because the "split screen" junction views were not supported until version 4.10 of the 3790 firmware. The large JV files your using are created for split screen views and the firmware used doesn't support it. Which maybe what your post was saying.

Yep!

I've settled on using my 765 with the 446M JCV file.... While the aspect ratio is not correct, I'd still rather have more junction views than the 'standard' 50 meg file.

It really doesn't look too bad, the pic is a little more than 2/3 of the screen. I consider this a stopgap to see if Garmin will do something for these older units.

Larry

Either the 150MB or 446MB file is a better option than the file that most of the Garmin users are getting saddled with. That 51MB file is an absolute joke.

On a 7xx series unit the images don't stretch. On a 1xxx unit, everything is stretched horizontally. The background image is fuzzy, but the most important parts of the image are perfectly readable. Those parts are the signs that the Junction View maker places onto the image, and the arrows.

This is a stopgap measure, but expect such stopgap measures to continue ad nauseam. It seems Garmin's approach to this issue is to bury its head in the sand and hope the problem goes away. Which is why it's necessary to keep pressing the issue. Anything that buries its head in the sand has to breathe sometime.

In case anyone wants to know...

When I updated my maps on my 885t to the newest 2012.20, I received the smaller JCV file of 51MB and the file version was D3153030A.

I deleted it and loaded on the largest JCV file I could find for the new maps, which was D319102A and has 446 MB of data.

In order to do this I had to be sure to delete the small JCV file and any other voice files I was not using. But I was able to load the larger file with a "little" room to spare and so far, so good.

Yes, the JV picture is not the total screen width any longer, but still very readable on my 885t.

So unless I need the room on my unit for something else, I'll keep the large JCV file on it.

Glad you got the bigger file to work but it sounds like your don't have a lot of free space left on your 885. Your have to be careful with the next map update or you may end up with less road coverage than you have now. Then it will be time to decide whether you need road detail for a larger area (bigger mapset) or more junction views.

and the 360's allow only the U.S. not all of North America. I don't visit Canada anyway...if I do, I will use my 775T. Time marches on...

Has anyone tried the 2012.20 maps and JCV file on a SD card?

X:\Garmin\gmapsupp.img <-- the 2012.20 maps
X:\Garmin\gmap3d.img <-- the 3D Buildings for 2012.20
X:\Garmin\JCV\D3191020A.JCV <-- the 446MB JCV file for 2012.20

where X: is the drive letter of the SD card

Or, are the 2012.20 files locked to the internal drive?

Thanks for the reminder. I'll be sure to do some calculations when the next map update comes along.

I could let the updater load the "Entire" map coverage to the computer only and then load the US coverage only for the next update since I never driver in Canada or Mexico.

I see someone else posed the question of possibly loading the JUCV files on the SD card rather than the Internal memory on the unit too.

Or perhaps it's possible to do ti the opposite and load the maps on the SD card and leave all the other files on the Internal storage.

That's beyond me to figure out, but I'm sure someone will give it a try to see if it works.

Thanks again.

I tried to download the lower 48 states on my 855 and got a warning that I would loose my voice activation. So I stopped the download. Anyone had that problem with their 855 in downloading the lower 48 states.

For the JCV file: On the SD or MicroSD card add a Garmin folder, in the Garmin folder add a JCV folder, place the JCV file there.

[quote=jjen
For the JCV file: On the SD or MicroSD card add a Garmin folder, in the Garmin folder add a JCV folder, place the JCV file there.

That's never happened to me with my 885, but I've always let the installer to the entire install of the comnplete map.

I'd suggest just try starting it over again.

I wonder if the 855 has less memory than the 885,or you have too many unnecessary files ( such as voice files ) and so not enough room to load the maps.

Before attempting to install the 2012.20 map version, I went in (after a full computer backup of the 855, of course) and deleted all foreign language help and voice files. I was able to install all of North America and as I remember, I think I still have over 900MB of free space, enough for many more map or jcv (yeah, ever the optimist here) size increases. I'm surprised that a 48-state update would have run into any space warnings issues, but not having tried the update without voice deletions, I must accept your report.

Prior to this update, I hadn't deleted any files and was able to install the full North America during updates.

For what it's worth, I used the standard manual map update method, not the new auto-updater.

That's interesting--I didn't know that we might lose Speech Recognition, if that's what you're referring to when running low on free space.

But for next time, if you delete the multitude of voices you'll never use, you'll be able to install all of North America and have ample room for future updates (I expect--who can predict the future?)

I was downloading the lower 48 states not the not the full north america states.

The files are locked to the device, but they can go anywhere on the device you have room. Internal memory or MicroSD, it makes no difference. Unless of course you talk to Garmin Support, where they will tell you the JCV file won't work on a MicroSD card. That last one is funny.

I loaded the full 2012.20 (Mapinfo shows: CN North America NT 2012.20 ALL) without any warnings and have about 700MB to spare. I did get to 51MB jcv file.
Mark

Have you tried to download the lower 48 states not the north america. Does your gps have VA. Forget the North America try the lower 48 states.

Does that mean you don't get Maine?

Just forget that I have ever ask the question. Since no one is reading what I have written.

I have a friend who bought the 1490 without the lifetime map update feature. He still gets all the junction views that I have lost thanks to the lifetime map updates (should have saved the money)I am thinking of making a back up of his unit on my computer and in theory, I should then have the larger jcv file which I could then install onto my unit. Will it work?

bpaine, I think it will work ONLY IF your friend has the same map version as you do. Note that you can't transfer his map file as it is locked to his unit only. You can copy the JCV file over, and it should work as long as you have the same map version.

rth..., if several of us have downloaded the bigger "All North America" with success and no issues, we don't understand how you can be having problems running out of space trying to install a smaller "48-state" update. This makes no sense. Do you have lots of photos, audible books or something downloaded to your GPS? The North America map is a bigger installation than 48-states.

Asking one of us with the full North America to go back and try to install a smaller map is asking way more than I feel any of us will do. I will not re-install the new 2012.20 losing all of Alaska, Hawaii, Mexico and Canada just to see if I can duplicate your problem, especially since I don't see how this could be an issue for me substituting a smaller map in place of my current bigger one.

Although you may not be reading this reply at this point, you seem not to understand what help is being offered to you; e.g., have you removed unnecessary voice files before installing the latest map update as has been asked?

I'll promise to read what you have written if you'll answer questions asked of you. We are trying to help folks here--really!

OK, This started when I email garmin about the JV on the 855. The reply was to tried downloading just the lower 48 states. I do have the full North America file loaded. I was just doing what was requested by garmin. When I clicked on the lower 48 states the pop up stated that I would lose the VA. Maybe I should have deleted the North America file, I don't know. But, since the JV will not add any extra, I will leave it alone. Not important anymore. Thank everyone for trying to help.

Just to pick nits here, Garmin tech support doesn't know what it's talking about. Several members of this forum attempted to change their map to the lower 49 in order to get a larger file, as Garmin promised. They all got the 51MB file.

Don't change a thing, but get a JCV file from a different source. Garmin doesn't seem inclined to fix what many of its users see as a problem.

just updated mine

Those emails are correct but keep in mind any end user issues sent to those boxes are sent right back to customer service & support.

My advice? Use Twitter. Garmin is terrified of negative trends on Twitter.

Also, keep in mind, the agents are being feed a complete line of BS and are getting no support from engineering.

I don't think garmin going fix JCV file issues in next 2012.30 map update.

I agree. Given Garmin's stonewalling stance right now, maybe the best we can hope for is that our loud complaining now will result in large improvements to JV for the underserved models in the next map update in three months.

Has Garmin even once stated that the smaller JCV files offer fewer JVs? Has any product information for models offering JV stated that there are different numbers of JVs being offered depending on the nuvi model purchased? Let's ignore for now that some Customer Service reps are incorrecttly stating that all JCV files offer the same number of JVs and it's just a matter of screen resolution and image quality.

Sound idea, but keep in mind the following: everyone with a computer or smartphone has an email address. Not everyone has Twitter. For example, I have multiple email addresses and a Facebook account, but do not have a Twitter account.

Facebook could be used the same way.

Point taken, and done. If you have Facebook, add your voice to their wall: https://www.facebook.com/Garmin?ref=ts

It looks like Garmin have really stitched this up tight. My friends unit is working better than my "updated" unit. As far as getting the word out, how about putting the news on all those "Customer review" tabs that are on all the online sites, eg Future Shop, Best Buy, GPS City. etc.

Not only did I receive this email, but I received a phone call directly from the one of the VP's himself. As they say, the squeaky wheel gets the grease. This will only work for the 7x5 series though.

Thank you for contacting Garmin International.

We do apologize for the inconvenience this has caused. To download a larger Junction View file for your device, please visit the page linked below and follow the steps in this email.

http://download.garmin.com/support/2012_20/NA/JV/D3060030A.j...

Connect your device to your computer using the supplied USB cable
Double-click the nuvi drive that appears in My Computer or on your Mac Desktop
Double-click the Garmin folder
Double-click the JCV folder
Save the D3060030A.JCV file from the above link file to this location on the nuvi
Delete any other JCV files in this location

Once you have completed this process your device will contain the complete Junction View database.

Please note that this file will only work on the nuvi 705 series and the zumo 660/665 models, so please do not attempt to install it to any other device.

Thank you for your patience during this time. If you have any additional questions or concerns, please let us know. Thank you.

With best regards,

Thanks rame1012,

Downloaded: D3060030A.jcv 770,511 KB

But can't install in Nuvi 765T until Sunday.

A 750MB JV file? Sheesh! That's bordering on ridiculous.

Of course it is. Garmin still trying to "persuade" users of older units to upgrade.

The reason it's that big is because it is just as many Junction Views as the 446 MB file for the 3790t, except these view aren't split screen, so they're almost double the size.

I downloaded the file and copied it to my Nuvi 3760. It took about 8 minutes to download to the computer and another 8 mins. to copy it to the unit.

The JCVs are full screen, not half screen. On a test run, a JCV would appear about 0.8 miles from an exit and only remain for about 0.1 miles. They worked in both portrait and landscape modes. LA is not visible for the few seconds the JCVs are on screen in either portrait or landscape.

There are definitely more JCVs in this 752MB file than are in the 152MB that came with the last update, but I'm sure some of the bulk of the file results from the full screen vs. half screen JCVs.

This file is an improvement. The images are the correct aspect ratio, for one. I had 17 Junction Views with this file, compared to 15 with the 446MB file. But man, this file is huge. While some of it does in fact come from the full screen views, I believe the major issue is that Garmin didn't use compression on the file when it was created, resulting in this huge-ass file we have.

I'll keep this file on my unit, since despite the size of it and despite Garmin's warnings it works perfectly fine on a 1xxx nüvi. For 2012.30 though, they need to look into compressing the JCV file when it's created, so that file size can be reduced while retaining as much of both quality and quantity of images possible.

I can confim that the new 752mb JVC file works great with 2012.2 on an microSD card.

By the by ... you need a 4gb microSD card ... should be able to buy for under $10.

Thanks for the info and the link!!!!!

I hope 2012.3 doesn't cause this much grief.

We need to keep email them about allowing lifetime map updaters to be able to load the FULL maps and junction view files on an sd card.

I can even live with the 752 meg file (or bigger) on future updates, because I'm going to have to run it on a microSD card ...

I can also confirm the new JCV file works on my 885T.

I had been using the 457MB file from my 2460, and although it worked, the smaller "portrait images" lacked some detail. This new file has images that fill the whole screen.

Because the 885T is a 4GB device, I was forced to install the new file on an SD card which I had in my junk drawer.

Thanks Rame1012, for passing on that info.

rame1012, we all certainly owe you something for your effort and for posting it on the factory for all to see.

As others are already reporting, this file works perfectly on GPS units other than the 705 series and zumo 660/665.

After removing unneeded help and voice files from my nuvi 855, leaving 984MB of free space, I deleted my 51MB crippled JCV file from the 2012.20 map update and substituted the humongous 752MB file made available from Garmin today.

A simulated route with multiple past JVs that were lost after the 2012.20 update are back, are clear, sharp and undistorted and work perfectly!

Hey folks, there may be a time when I'll need to move the large JCV file to a SD card. Can anyone confirm if JCV files work from SD cards on the 8x5 series and if so, do I put them in the SD card's \Garmin\JCV\ directory? Thanks.

And once again, a major thanks to rame1012 for accomplishing something I thought to be impossible.

There are a few less views in the DFW area than I had with 2012.1 with the 367MB file, but I guess that goes with win some and lose some as changes are made. Resolution is back to normal. Wish we could have that availability all the time.

I confirm I was able to load the 752MB JCV file on my SD card for my 1490LMT and it works great. Images are full screen and clear.

Thanks for the info rame1012.