Old map deletion

 

I have two 2460LMT units.

For some reason a few years ago one of them, when installing a new map, couldn't fit the entire North American map on it (even though the other was able) and required installing what didn't fit onto the micro SD card via mapsource.

I just updated this unit to the latest version, 2015.10 (and the last update 2014.4?, maybe a few more prior) via Garmin Express and it appears the entire map went on the unit without manually adding anything that didn't fit to the SD card.

When I look in the "About" details of the maps I have the following:

CH North America NT
2015.10 ALL (the box is checked for this map)
trafficTrends North America 4.25

And unchecked I have:

CH North America NT 2013.20
Honolulu, Hawaii, Kapaa, Hawaii, Kahului, Hawaii,

It cuts off there but I'm assuming it ran out of space to list all the maps added via mapsource.

Anyway, every now and then this unit will pop up a message when powering up to the effect the map is outdated even though I have successfully updated with the latest version. The map it lists as being out of date is the 2013.20 version which I don't have checked/running on the unit.

Is there a way to delete this outdated portion without affecting the good portion? If so how?

FWIW I've been using GE with no problems since it hit the scene.

Thanks in advance for any insight you can provide.

--
. 2 Garmin DriveSmart 61 LMT-S, Nuvi 2689, 2 Nuvi 2460, Zumo 550, Zumo 450, Uniden R3 radar detector with GPS built in, includes RLC info. Uconnect 430N Garmin based, built into my Jeep. .

First, backup!

First, backup your entire nuvi and SD card to a computer before tinkering with their internal files.

soberbyker wrote:

I have two 2460LMT units.

For some reason a few years ago one of them, when installing a new map, couldn't fit the entire North American map on it (even though the other was able) and required installing what didn't fit onto the micro SD card via mapsource...
When I look in the "About" details of the maps I have the following:

CH North America NT
2015.10 ALL (the box is checked for this map)
trafficTrends North America 4.25

And unchecked I have:

CH North America NT 2013.20
Honolulu, Hawaii, Kapaa, Hawaii, Kahului, Hawaii,

It cuts off there but I'm assuming it ran out of space to list all the maps added via mapsource.

Is there a way to delete this outdated portion without affecting the good portion? If so how?

FWIW I've been using GE with no problems since it hit the scene.

An aside: read the initial section I italicized, then the last italicized section. I will disagree that your use of GE has been with no problems given that the 2460 should have received the full North America update without having to resort to Mapsource.

Now, to get rid of those cursed islands twisted and whatever other areas were Mapsourced-in.

You say that you used Mapsource to install Hawaii, etc. to a micro SD card. Is this correct? Is the old Hawaii,etc. the only thing on the SD card? If so, remove the SD card with the nuvi off, then reboot and they should be gone. If the old Hawaii, etc. map file is on the SD card and there are other files are on the SD card that you want to keep, then look on the SD card for the map file, probably called gmapsupp.img. Then follow my instructions below regarding gmapsupp.img.

What follows is how to find and remove a Mapsource-added map if instead of going to the SD card, it was installed to the nuvi itself.

Hook your nuvi to your computer and look for files ending in .img in the .System folder and the Map folder. Do not touch the gmapprom.img, gmapbmap.img, or gmaptz.img files. What you're probably looking for is a gmapsupp.img file, possibly with a file date corresponding to the date you adding Hawaii with Mapsource. If you have other .img files, let us know.

The safest way to test removing the 2013.20 Hawaii, etc. is to rename the gmapsupp.img to gmapsupp.img.disabled. Then safely disconnect the nuvi from the computer, fire up the nuvi and see if the 2013.20 Hawaii is gone. If so, and to gain some extra room, you could go back and either move the disabled file to your computer or simply delete it.

PS--to gain extra storage on your 2460, you could go ahead and remove unneeded voice and other files that are in languages you don't speak and never plan to learn.

More, if needed:

http://www.poi-factory.com/garmin/problemsolver#system-folde...

http://www.poi-factory.com/node/31186

thanks

The "old" map stuff was on the microSD card. I removed the card, turned on the GPS checked the map version and only the most current showed (no more cursed islands, etc) and did a few "where to" addresses from Hawaii as well as other places in the western USA and the unit found and mapped them out just fine. (Most likely when given a choice due to lack of space I installed as much of the east coast the unit would allow then the rest via mapsource).

The files on the card were mostly dated from 8-xx-2012. There were a couple from that ended in 'update' from 5-31-2014, but nothing with the file ending in the three don't touch files you list above. Without the microSD card it found the places I asked it to look for so I'm guessing whatever the newer files were weren't needed. Don't punish me too severely but I just got rid of whatever was on that card and reinserted it.

This unit is the one my wife uses so I'm not sure why it needed to revert to the sd card a few years ago, nor do I understand why all of a sudden it stopped needing the sd card. I do know when it first told me there wasn't enough room I deleted most of the extra vehicles and all languages we didn't need to try and free up space, but it wasn't enough.

Sitting here at my desk and searching for places all seems fine now, the routes compared to my computer mapping program look correct. The real test will be getting out on the road and allowing it to run but for now I seem to have corrected the problem.

Thanks again.

ETA: I'm not really sure when I started to use GE but I don't recall any problems, at least none of the horror stories I've read here. I used to go to "My Garmin" and update via the Garmin website interface.

--
. 2 Garmin DriveSmart 61 LMT-S, Nuvi 2689, 2 Nuvi 2460, Zumo 550, Zumo 450, Uniden R3 radar detector with GPS built in, includes RLC info. Uconnect 430N Garmin based, built into my Jeep. .

Good News

Thanks to Craigw's thorough advice (as usual) you got the issue fixed.

Out of curiosity did you ever compare how much memory is avialable on your wifes 2460 compared to your own?

I just find it strange with 8gb memory on the 2460 it should never have to add a map to an SD card on an update unless something went wrong and the older map was not removed.

You may also want to check your System\ASR folder and make sure that you ONLY have the the two voice command files are present for 2015.10. These files are updated with every map and can take up substantial space if the older ones are not removed on the update.
For the 2015.10 map on the 2460, check to see if these two files are present and have the date stamp when you updated to 2015.10.

04CNCW00.SRX - 2,684kb
04CNCW001.ASR - 777,073kb

If ther are any other .SRX or ASR files in that folder they belong to a different map version, you can backup and then delete those.

In the fuure, you can easily see how many .img files are on your Nuvi or SD card by using the search feature in Windows Explorer (if using Windows).

--
Nuvi 2460LMT 2 Units

Good idea

muell9k wrote:

Out of curiosity did you ever compare how much memory is avialable on your wifes 2460 compared to your own?

I just find it strange with 8gb memory on the 2460 it should never have to add a map to an SD card on an update unless something went wrong and the older map was not removed.

I like that idea. If there's a significant unexplained difference in free memory, it'd be worth searching for the cause which could easily be a single (or a few) large file(s) that should not be present.

I haven't heard of this issue with the 24xx series, but it definitely has occurred during past updates on the nuvi 3597 where a large unneeded 600+ MB file was left behind after a map update for some folks. And, as we found in this case, supplemental maps added through Mapsource are left behind even after newer map updates make them unneeded.

checked

muell9k wrote:

~snip~

04CNCW00.SRX - 2,684kb
04CNCW001.ASR - 777,073kb

If ther are any other .SRX or ASR files in that folder they belong to a different map version, you can backup and then delete those.

~snip~

Thanks to both of you guys.

Both units were nearly full, less than a GB left. Windows 7 lists the size as 7.31GB

Both had a lot of "asr" & "srx" files from 2010, 2011, & 2012.

I deleted all but the two you listed. Got rid of other languages as well. I've gotten the free space down to 2.67GB on mine and 2.64GB on hers. I have a few more vehicle icons.

--
. 2 Garmin DriveSmart 61 LMT-S, Nuvi 2689, 2 Nuvi 2460, Zumo 550, Zumo 450, Uniden R3 radar detector with GPS built in, includes RLC info. Uconnect 430N Garmin based, built into my Jeep. .

MapQuest and Trip Planner

@soberbyker

As a side question/comment. Have you used MapQuest to import Routes to your 2460s? This is in ref to my post MapQuest to GPS. http://www.poi-factory.com/node/42691

Your comments would be appreciated.

--
Garmin nuvi 2460LMT (2)

not yet

dferron wrote:

@soberbyker

As a side question/comment. Have you used MapQuest to import Routes to your 2460s? This is in ref to my post MapQuest to GPS. http://www.poi-factory.com/node/42691

Your comments would be appreciated.

Sorry, no I haven't. If I want a route I use my Microsoft Streets and Trips and print a few maps as a back up. I'm fairly good on routes and once I've "seen" it a time or two I pretty much get where I'm going.

I drive a truck(s) for a living, I'd been using maps a long time before GPS's so my sense of direction is pretty good. When I drove a trash truck I had to figure the best way through an area so as to not cross the same piece of road more than I needed to, a GPS doesn't give a big enough detailed "picture" of the area for me.

One thing I do like on my 2460 is the trip log line it paints. I can use that see get a look around and see if I've made the correct choice.

--
. 2 Garmin DriveSmart 61 LMT-S, Nuvi 2689, 2 Nuvi 2460, Zumo 550, Zumo 450, Uniden R3 radar detector with GPS built in, includes RLC info. Uconnect 430N Garmin based, built into my Jeep. .

Files on 3597

There are some files in my nuvi 3597 LMTHD .System folder, which I have no idea what they are for:
ASR 977 MB
SID 1.05 GB
SQLite 10 MB
Ext.data 13 MB
Could I delete them ? or they are necessary for the proper operation of the device ?
Thank you for any help.

--
Garmin 660, 775, 3790, 3597 and ecoRoute HD.

Files on 3597

There are some files in my nuvi 3597 LMTHD .System folder, which I have no idea what they are for:
ASR 977 MB
SID 1.05 GB
SQLite 10 MB
Ext.data 13 MB
Could I delete them ? or they are necessary for the proper operation of the device ?
Thank you for any help.

--
Garmin 660, 775, 3790, 3597 and ecoRoute HD.

NO!

You don't want to delete them ... most of tham anyway. The ASR folder contains the voice recognition files. If you have languages other than the ones you need, you can delete the files relating to those unused languages. The SID folder contains information for traffic trends, search and other features.

The Sqlite folder contains data bases for traffic trends, mytrends, ecoroute, etc. The Extdata folder contains chipset fixes, special fonts, etc. You may not need everything in these last two folders, but you don't gain much by deleting, so leave them alone.

If you do decide to experiment by deleting any of these files, make sure you have a good backup. But my advice is to leave them.

--
Alan - Android Auto, DriveLuxe 50LMTHD, Nuvi 3597LMTHD, Oregon 550T, Nuvi 855, Nuvi 755T, Lowrance Endura Sierra, Bosch Nyon

All good

Good discussion and some great info -- thanks all!

Debbie

--
Garmin Drive Smart 61 NA LMT-S

Many Nuvi Files Defined

Some helpful descriptions of Nuvi Files.
Different models may or may not have some of the files listed.

Nuvi File Description
Diag folder - used by Garmin, it stores debug infos
ExtData folder - ExtData folder – stores 006-D0952-01.bin, 006-D0952-02.bin, 006-D0952-03.bin, 006-D0952-04.bin, 006-D0952-05.bin, 006-D0952-06.bin, 006-D0952-07.bin, 006-D0952-08.bin files which contains special font for not alphabet languages likes Herbew, Thai, Arabic.
ExtData folder – also stores for some device with MTK chipset files ARC.BIN, BEE.BIN, 006-D1221-00.bin. 006-D1221-00.bin – GPS Chipset Type M HotFix Data software which updates by webupdater and ARC.BIN & BEE.BIN are files what stores current info for GPS software metioned above. See also post n.19 –Thanks AlexWhiter
GPX folder - stores your trip log.
Current.gpx = file created each time you connect your Nuvi to USB. Stores all current loaded routes and waypoints in the Nuvi.
Temp.gpx = stores all routes and waypoints :created for connecton from Mapsource to Nuvi
You can open the GPX files within this folder with Mapsource ( see post n 5 for more infos)
BTM folder - stores infos about your phonebook and a .wav file your unit run when a call is coming in your phone.
EULA folder - stores infos about licences (traffic,Navteq,nuRoute)
Help folder - stores help files in different languages.
Keyboards folder - contains Keyboard languages files ( .kbd files).
Reports folder - contains the mileage.csv , a file that will give you a summary of all of your trips, cost, etc. as part of the ecoRoute feature: it contains the following fields, Date (MM-DD-YYYY),Start Time,Origin Longitude,Origin Latitude,Destination Longitude,Destination Latitude,Origin,Destination,Distance (km), Time (min), Fuel Economy (l/100km), Fuel Cost (EUR), Carbon Footprint (kg).
Scores.bin is related to Overall : a combination of the speed acceleration and braking score and to Speed : gain points for driving at your vehicle's optimal speed for conserving fuel.
RoadSideAssist folder - stores infos about RoadSideAssist services (AA) and images for 'Where Am I' function.
JCV folder - stores Junction View files on models which support such a feature.
ASR folder - "SRX+ASR"/Voice recognition files (Automatic Speech Recognition).
G2S folder - G2S&.db :NüRoute technology&trafficTrends.
SID folder - Files are stored in 34xx and newer .System/ SID and are traffic trends ,instaSearch , instaAdresses and POIs and FastRouting related.
JPEG folder - stores Nuvi's default pictures and splash screens. You can add more jpg files into this folder.
POI folder - stores custom POI and travel guide files.Preloaded Cyclops.gpi = trial version of Garmin's speedcams subscription. All these files have .GPI extensions. It is ok to delete these files if you are sure you don't want them.
RemoteSW folder - Files stored in RemoteSW folder are the microcodes for appropriate chipset installed in your nuvi. Firmware upgrade checks at start if the version is to flash < version on disk – then upgrade it. It is an upgradeable code. (GCD, BIN & SUM) The first.GCD is the original firmware. The other file is the new firmware that the unit has installed- It contains also Touch Panel Software(006B121100.GCD: This file is for Touch Panel Software in 37xx series). Firmware for GTM receiver is in RemoteSW too. Nuvi creates an info entry about it in file GarminGarminDevice.xml.
Scrn folder - stores your screen capture images. The files are in bitmap (BMP) format and could be opened with Windows Paint application. Filenames: 2343.bpm (example. The numbering seems to be random)
Text folder - stores default and custom messages and keyboard layouts. These are text files with .GTT extensions: additional language versions text files. You can edit them with a text editor.If American English is selected, no other translation file is necessary since this language is embedded in the unit firmware.
Dashboards folder -stores new DASHBOARDS designs introduced in 34xx models.
Vehicle folder - stores Garmin vehicle icons. Files are with .SRF extension. You can add and delete these files.You can download them at
userdata - technical archive, dont delete.
Voice folder - stores Garmin voice guidance files. Files are with .VPM extension. You can delete unused voice files, but do it with care.
Filenames like:Afrikaans_.vmp are normal voices that do not speak streetnames
Filenames like:Nederlands_Claire.vmp are TTS (text-to-speach) voices that do speak streetnames
Birdseye folder - stores Garmin maps made by using BirdsEye Satellite Imagery in .jnx format.
Themes folder - stores .kmtf extension files. They are just text files, so you can create your own:you could change the color of lakes, parks, shopping centers and other polygon areas.
SQLite folder - It stores .db files : Traffic trends, ecoRoute,myTrends and some user's strings. To read these files you can use a SQLite client .
SQL folder - it contains SQL/DB-file "Trail Database" for outdoor devices activities.
It displays special routes or information depending on the activity chosen by the user, differentiating between pedestrian activity cycling activity, hiking etc : Active Routing feature in new Garmin Topo maps PRO.
Logs folder - stores files concerning track logging feature.
Demo folder - can store demo.gir file .It contains some images for the demo sequence.
GPS folder - stores ARC.BIN , BEE.BIN etc files used by webupdater.It contains also rxn folder.Inside eph,poly and seed folders, probably Ephemeris prediction related.
Custom maps folder - stores custom maps made eg. with Google Earth in .kmz format.
Custom Symbols folder - stores waypoints symbols you can create and add in your outdoor gps.
Profiles folder - stores profiles and profiles settings in outdoor gps. You can choose different ones.
among automotive ,classic, marine etc each one with different settings: selected maps to be shown in choosen profile etc.
Filters folder - Geocache data.
Audible folder -audio books.
MP3 folder- Mp3 audio files.
Video folder- Video files:3xxx&2xxx series supported video formats are:
.avi, .mp4 (H.264 video codec only!), AAC audio codec (48000 Hz, 16 bit), resolution up to 720*480.
.asf (WMV1, WMV2, WMV3 video codec), MSAudio1, MSAudio2, MSAudio3 audio codec (48000 Hz, 16 bit), resolution up to 720*480.
.wmv (WMV video codec), wma audio codec, resolution up to 720*480
fs_image.ver -Technical file.
GarminDevice.xml - stores information about your Nuvi to facilitate transfer of data to/from your unit. It is recreated each time the device starts. The firmware never reads from it but only writes to it.
Trips- This is for trip planner files.You can back up this folder. (All files in this folder will be deleted when you do an hard reset.)
FCD- FCD (Floating Car Data), constantly evaluates information about the traffic situation and sends a control center, data are automatically analyzed and sent to TMC-compatible devices.
gmapbmap.img - Garmin base map (worldwide map) cannot deselect it.
gmapbmap.sum -check-sum file, mapupdate related, can be deleted.
gmapoem.img -Additional map for specific branded units such as Honda and BMW,it doesn't show up in the map inventory, cannot deselect it.
gmapprom.img - Garmin detailed map (preloaded). Back up this file before deleting or overwriting it.
gmapprom1.img -Another Garmin pre-programmed (preloaded) map. Back up this file before deleting or overwriting it.
gmapprom.sum -check-sum file, mapupdate related, can be deleted.
gmapsupp.img - This is the common file name for Garmin supplementary maps.
*.unl - Unlock code files for Garmin maps.
gmaptz.img - Garmin time zone map.Contains Timezones of different cities/countries for selecting the right timezone by the device based on the location.
gmaptz.sum -check-sum file, mapupdate related, can be deleted.
gmapdem.img - Garmin DEM (digital elevation model) It displays contours on compatible devices.
gmap3d.img - Garmin 3D buildings map.
gmap3d1.img - 2nd Garmin 3D buildings map.
GUPDATE.GCD - Used for Garmin firmware update.
GtmData.xml -It stores infos about Traffic receiver: ID and last connection date.
Locales.xml - It stores default language, currency sign, time zone, etc settings for different countries.
*.Gma -Garmin new protection digital certificate. Only the legitimate buyer of a Garmin map product license will receive the GMA file connected to his/her GPS unit. That's implemented for maps with mapid >= 2200.
Garmintriangletm.ico - it's the icon will appear on myComputer when you'll attach your outdoor gps.
Nuvi_drive.ico - it's the icon will appear on myComputer when you'll attach your Nuvi USB.
Startup.txt - Edit this file to display a message while your unit is powering on.
*.sum - files left by updater: can be deleted.
TrafficProvider.xml - It stores infos about your traffic providers subscriptions (Nuvi 1xxx and 37xx series etc.)
sw.unl - unlock code file for phones Garmin MobileXT application

--
Nuvi 2460LMT 2 Units

WOW

muell9k wrote:

Some helpful descriptions of Nuvi Files.

Excellent info. Thanks,

Map Question

So help me out here. Am I to understand that when I go to update my Garmin with the newest Map that the old original one will still be there, taking up memory? I just got my Garmin this year and still learning about it. I've not updated anything as yet.

Thanks

--
Eric M - Nuvi 2555 - IBA 46658 - TOH 151 - 2006 Honda Goldwing 2009 Honda Shadow -

Old Maps Should Be Removed With Update

If the map update was successful, the old map and dependant other files will be replaced with new ones.

Sometimes things go wrong (especially with Garmin Express) and debris is left.

--
Nuvi 2460LMT 2 Units

Thank you

alandb and muell9k
Thank you for the excellent information.
I think, I better not touch the .System files of my 3597. I am not a computer, or nuvi expert.
The "Many nuvi files defined" (by muell9k) is an extensive and informative information, but beyond my limited knowledge about GPS.
Beside the map.img files the SID file is the only large file (1.05 GB) in my unit and I see it includes traffic trends and other insta search functions.
I do not use traffic trend and my trend. No check marks for these features, under Settings.
Thank you again

--
Garmin 660, 775, 3790, 3597 and ecoRoute HD.

Thank you

alandb and muell9k
Thank you for the excellent information.
I think, I better not touch the .System files of my 3597. I am not a computer, or nuvi expert.
The "Many nuvi files defined" (by muell9k) is an extensive and informative information, but beyond my limited knowledge about GPS.
Beside the map.img files the SID file is the only large file (1.05 GB) in my unit and I see it includes traffic trends and other insta search functions.
I do not use traffic trend and my trend. No check marks for these features, under Settings.
Thank you again

--
Garmin 660, 775, 3790, 3597 and ecoRoute HD.

@Cosmopolitan

You should not have to worry about touching the .system files AS LONG AS YOU HAVE A BACKUP. So, if you do not have a current backup, please take the time to make one today.

We hear from far too many members who wish they had had a backup.

Multiple JCV files

While I know .jcv files are not "maps", I discovered that I have two .jcv files on my 765 and I do not know why.

My speculation is that it is a result of having my maps placed on the SD card.

The last update, I was told that the map would not fit on the 765 and did I want it to go on the SD card? I let the map go to the SD card.

Just recently, I was playing around with software (which is both free and portable) called TreeSize Free (http://www.portablefreeware.com/index.php?q=treesize&m=) and looked at the nuvi. I noticed that the JCV folder was larger than I expected.

I find that it has
D3060120A.JCV (note the upper case extension)
 786 MB (824,861,052 bytes)
 Created: Monday, January 13, 2014, 7:19:13 PM
 Modified: Monday, January 13, 2014, 6:45:16 PM

D3060140A.jcv (note the lower case extension)
 809 MB (849,211,173 bytes)
 Created: Wednesday, May 31, 2014, 1:40:04 PM
 Modified: Tuesday, May 20, 2014, 8:36:30 PM

Based on what t923347 has taught us, I have both the JCV file for the 2014.30 Maps and the JCV file for the 2015.10 Maps.

I swear I do not remember independently downloading the latest large file. I have downloaded previous large JCV files.

Importantly, the D3060140A.jcv file is in C:\Program Data\Garmin\Core Update Service\MAP-NA-2015-10 folder.

Note that there is - in the same folder - the file
D3191130A.JCV
 475 MB (498,969,966 bytes)
 Created Wednesday, May 21, 2014, 12:09:06 PM
 Modified Wednesday, May 21, 2014, 12:25:08 PM

I was surprised to find the small JCV file was the one on my 2595 and it had a date of May 22, 2014.

Why was the large one put on the 765 and the small one put on the 2595?

Anyway, one of the morals of this story is that one can find out a lot about your devices - AND ABOUT YOUR COMPUTER - by using TreeSize free to look around. The default display is to start with the folders that takes up the most space. Whenever I do this, I almost always find that there are files that I do not need (especially since I do a fair amount of video editing using Adobe Premiere Pro and often go through several iterations of AVI files before I get to the finished product).

Now, can someone explain the fact that I have a small file on one device and the large file on the other and I did not do anything with either.

My understanding

jgermann wrote:

...Now, can someone explain the fact that I have a small file on one device and the large file on the other and I did not do anything with either.

If I'm missing your point, just ignore this.

To me, everything you found makes sense except for your 765's keeping of the older D3060120A.JCV file from two map updates ago. That file should have been deleted both when the 765 was updated to 2014.40 and 2015.10.

As I remember reading (I've never owned a nuvi 7x5 series so correct me if I'm wrong), the 765 does get the large JCV installed by Garmin during map updates without the need to manually download the large JCV file and replace the default tiny JCV file that comes with some of the older models like the nuvi 855. The 765 receives the full-screen 800-ish MB file.

The 2595 also receives the correct JCV file during map updates--and being a split-screen file, it is the 500-ish MB file.

So to me, without your downloading and copying the large JCV file manually to a device, the only problem is that your update process (Garmin Express or GarminMapUpdater, with or without the clone method) left the large JCV file from two map updates ago rather than deleting it during either of the two most recent updates. As you guess, I tend to agree that maybe the update got confused when trying to first install a map update to the SD card rather than the internal nuvi storage.

Ok makes sense

CraigW wrote:
jgermann wrote:

...
To me, everything you found makes sense except for your 765's keeping of the older D3060120A.JCV file from two map updates ago. That file should have been deleted both when the 765 was updated to 2014.40 and 2015.10.
...

I need to review but if there are differences in units as to which JCV file (small vs large) they automatically get in an update, then that would explain it.

If someone can find the discussion thread, I will put that into the Glossary and/or the Index for future reference.

Thanks.

My memory

jgermann wrote:
CraigW wrote:

...
To me, everything you found makes sense except for your 765's keeping of the older D3060120A.JCV file from two map updates ago. That file should have been deleted both when the 765 was updated to 2014.40 and 2015.10.
...

I need to review but if there are differences in units as to which JCV file (small vs large) they automatically get in an update, then that would explain it.

If someone can find the discussion thread, I will put that into the Glossary and/or the Index for future reference.

Thanks.

Until someone offers the details or a link to older discussions with the answer, this is sort of what I remember:

1) All models that receive the split-screen Junction Views are given the correct JCV file during map updates. (The one "exception" to this is the small group of split-screen device owners who prefer and are willing to manually download, install and then view the large full-screen JCV file and its views.)

2) Of the older devices that show full-screen JVs, it's the nuvi 1xxx and 8x5 (maybe 8x0 as well) devices that receive the tiny JCV file from Garmin during map updates--and these are the devices that will benefit most from manually downloading/replacing the large JCV to their device.

3) Of the older devices that show full-screen JVs, it's maybe only the 7x5 series that receives that large JCV from Garmin during map updates, and therefore they do not need to manually download or use the "large" JCV file.

The reasons for 2 and 3, above, are due to space issues on the older devices:

http://www.poi-factory.com/node/34375

The first devices to get JVs were, I think, the 7x5 and 8x5 (8x0?), and (most/all?)of the 1xxx series.

Although the 765 has the same 4GB capacity of the 855, the 855 storage had to hold voice recognition files, leaving little room for a large JCV file. Therefore, the 765 gets the large JCV while the 855 gets a special tiny JCV file during map updates even though they're both 4GB devices. Many of the 1xxx devices were 2GB devices and therefore had too little space for the large JCV file as well, and therefore got the tiny one.

8x0 no JCV

The 8x0 devices did not support junction view. Junction view was introduced on the 7x5 series and included with the 8x5 series. In the 1xxx series, the only models that had Junction view were the 1390 and 14xx units. The 1350 and below did not have it.

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Alan - Android Auto, DriveLuxe 50LMTHD, Nuvi 3597LMTHD, Oregon 550T, Nuvi 855, Nuvi 755T, Lowrance Endura Sierra, Bosch Nyon

Thanks

alandb wrote:

The 8x0 devices did not support junction view. Junction view was introduced on the 7x5 series and included with the 8x5 series. In the 1xxx series, the only models that had Junction view were the 1390 and 14xx units. The 1350 and below did not have it.

Thanks, I knew there'd be folks here with The Knowledge.

Exactly

CraigW wrote:

1) All models that receive the split-screen Junction Views are given the correct JCV file during map updates. (The one "exception" to this is the small group of split-screen device owners who prefer and are willing to manually download, install and then view the large full-screen JCV file and its views.)

Exactly, although I don't think there is an "exception", it's just the users choice to replace the properly receive file with a different one. smile

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Nuvi 350, 760, 1695LM, 3790LMT, 2460LMT, 3597LMTHD, DriveLuxe 50LMTHD, DriveSmart 61, Garmin Backup Camera 40 and TomTom XXL540s.

@craig

Thanks

Info added to Glossary and to the Index

Zumo

Just for completeness in this discussion, I think the Zumo 660 also has the full screen junction views. As far as I know, it still gets the large full coverage JCV file when updating maps. Maybe someone with one of these units will confirm or debunk.

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Alan - Android Auto, DriveLuxe 50LMTHD, Nuvi 3597LMTHD, Oregon 550T, Nuvi 855, Nuvi 755T, Lowrance Endura Sierra, Bosch Nyon