1490LMT MicroSD Files Question

 

Like others, I recently experienced difficulty with space to allow the 2012.30 maps update. After reading other posts, I found how to eliminate enough unused files on the internal memory to allow the update to load.

Since I would prefer to not have this problem again, I purchased and installed an 8 Gb microSD card. I am now trying to determine the files and folders that the device can see on the SD card. I found that pictures will show up if installed in a JPEG folder on the SD card. It appears that Voice and Vehicle folders and files will not show if on the SD card.

Could someone tell me what I can place on the SD card that is recognized by the Garmin? I know that maps can be installed to the card but I would prefer to move other items (POI's, Voice, Vehicles, etc.) if possible.

Any help would be appreciated.

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Pictures, music (if your device supports it), maps, and Custom POIs can be read by the unit from the card.

Voices, vehicles, text and other system files cannot.

1490LTM Files to Remove

Can you tell me what specific files that you removed and have you been able to continuous update afterwards without problems.

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JG - Nuvi 2460

If you remove voices, text

If you remove voices, text and vehicles you will be prompted to replace those files every time WebUpdater is run. However, while it prompts you to do so, you're not obliged to comply. In simpler language, you can ignore the prompt and the GPS will still function.

Other files can be removed, such as the trial version of the Oxford Translation Dictionary if present and foreign language sets of EULA and help files, but these files cannot be replaced. This is why you completely back up the GPS before doing anything in the memory space.

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"Anyone who is capable of getting themselves made President should on no account be allowed to do the job." --Douglas Adams

I also have the 1490lmt

I also have the 1490 with an 8 GB card. All my custom POI's, the large 775 KB JVC file and personal photos are loaded on my SD card.

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Are we there yet?

I want to get this right the

I want to get this right the first time hopefully.
Did you transfer the 775KB JVC from the unit to the SD card then delete it.

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JG - Nuvi 2460

No I got it from here

jcg4550 wrote:

I want to get this right the first time hopefully.
Did you transfer the 775KB JVC from the unit to the SD card then delete it.

When I update my latest map, Garmin only supplied the smaller JVC file (about 55KB) because of the lack of internal memory on my 1490.

I got the larger JVC file (D3060040A) from here:
http://www.poi-factory.com/node/34881 Look for the post from wp3gi

Downloaded to the SD card. Then went to the hidden "system folder" in the garmin and deleted the small file.

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Are we there yet?

Multiple JCV files?

Is it possible to have multiple JCV files on the SD card?

For example I have CN North America 2012.30 loaded on the Nuvi with the JCV file removed and the JCV file loaded on the SD card in the Garmin\JCV folder.
The JCV file named "D3060040A.jcv. This file is the corresponding JCV file for that particular map.

Now I want to add a Europe map, I add the Europe map to the SD card, Garmin\gmapsupp.img.
Can I place the Europe JCV file in the same JCV folder on the SD card and have it work? Of course it will have a different file name corresponding to the Europe map.

In simple terms, can more than one JCV files be loaded on a SD card in the JCV folder and they will work.? Is the Nuvi smart enough to distinguish which JCV file goes with the various loaded maps.

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Nuvi 2460LMT 2 Units

1490LMT Directory Structure

synctronic wrote:
jcg4550 wrote:

I want to get this right the first time hopefully.
Did you transfer the 775KB JVC from the unit to the SD card then delete it.

When I update my latest map, Garmin only supplied the smaller JVC file (about 55KB) because of the lack of internal memory on my 1490.

I got the larger JVC file (D3060040A) from here:
http://www.poi-factory.com/node/34881 Look for the post from wp3gi

Downloaded to the SD card. Then went to the hidden "system folder" in the garmin and deleted the small file.

What is the required directory structure for the SD card on the 1490 and where is the JVC file placed?

Although POIs can be read from the SD card (in a POI directory), I get this nag on startup asking if I want to move them to internal memory. Is there any way to turn this off?

I have also notice that pictures associated with favorites must be on internal memory or they go away after a reboot. Is this expected?

Any help is appreciated. Much thanks on the JVC tip as my file was only 45 Meg and my 8 Gb SD will hold the larger file (assuming I get it in the right place).

Some answers

@muell9k: Yes you can. Since the JCV files are tied to the accompanying map and have different names, there's no chance of conflict. Just one thing: your 1490 isn't restricted to gmapsupp.img for the map. Create a directory named "Map" on the root of the MicroSD, name your map file EUROPE.IMG and place it in that folder. The Garmin will see that map without difficulty.

@rtbond: Required directory structure:

X:\Garmin
X:\Garmin\JCV
X:\Map

Optional items:

X:\JPEG

The file sizes of POIs are so small that it's simply easier to let the files be installed to the internal memory. That will certainly eliminate the prompt. For each individual POI file however there should be a checkbox that says "Don't ask me again".

I can't answer that question about favorites. I don't attach pictures to them.

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"Anyone who is capable of getting themselves made President should on no account be allowed to do the job." --Douglas Adams

No Don't ask me again

Strephon_Alkhalikoi wrote:

The file sizes of POIs are so small that it's simply easier to let the files be installed to the internal memory. That will certainly eliminate the prompt. For each individual POI file however there should be a checkbox that says "Don't ask me again".

My 1490 does not have that option. It asks again no matter what you do.

I probably confused things

I probably confused things with my 200W. In that case, accept the files to stop the prompt. You're not saving all that much space by not doing so.

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"Anyone who is capable of getting themselves made President should on no account be allowed to do the job." --Douglas Adams

Doesn't Help

I keep the few POI files that I use on the SD card. I have dropped all restaurants because they are not reliable. The POI files still take up 4MB if I let them go internal and then it continues to ask. I just live with pressing no. My 265 responds the way it should. Garmin just forgot the 1490.

Dup Files On SD Card Question Answered

Strephon_Alkhalikoi wrote:
@muell9k: Yes you can. Since the JCV files are tied to the accompanying map and have different names, there's no chance of conflict. Just one thing: your 1490 isn't restricted to gmapsupp.img for the map. Create a directory named "Map" on the root of the MicroSD, name your map file EUROPE.IMG and place it in that folder. The Garmin will see that map without difficulty.

@Strephon_Alkhalikoi
Thanks for the advice confirming multiple JCV files are recognized on SD card.

BTW I don’t have a 1490 but rather a 2460, my mistake I should have specified. Putting a Map folder in the Garmin root directory does not work on the 2460. It will not recognize any maps unless they are named gmapsupp.img and placed in the Garmin directory.

Quite odd the 2460 being newer than the 1490 and 4x the memory (8gb as opposed to 2GB). Why would they choose to have the old style of map naming. It would be nice to name the map whatever I want. This format on the 2460 of gmapsupp.img may limit me to only having one map stored on my 8GB SD card. Can't understand Garmins logic, using an outdated file structure on newer units.

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Nuvi 2460LMT 2 Units

With newer units you will

With newer units you will continue to get the prompt asking to install to internal memory. As long as you have pois on the card. It will not go away. You can not turn it off. It is another thing that Garmin took away. Either install to internal or live with the prompt.

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Nuvi 2460LMT.

Not totally

pwohlrab wrote:

With newer units you will continue to get the prompt asking to install to internal memory. As long as you have pois on the card. It will not go away. You can not turn it off. It is another thing that Garmin took away. Either install to internal or live with the prompt.

Not on my 2450LM. You can tell it not to ask again!!!!

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Bobby....Garmin 2450LM

No Prompt on the 2460 Either

farrissr wrote:
pwohlrab wrote:

With newer units you will continue to get the prompt asking to install to internal memory. As long as you have pois on the card. It will not go away. You can not turn it off. It is another thing that Garmin took away. Either install to internal or live with the prompt.

Not on my 2450LM. You can tell it not to ask again!!!!

Not sure what is considered a "newer unit" perhaps you are referring to the 2012 series just recently released.

My 2460 will only ask once after I respond NO. I can remove the card, reboot without it, then reboot again with it inserted and the message will never appear.

The only time it will reappear is if I put an additional new POI on it, answer no again, and message never comes back.

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Nuvi 2460LMT 2 Units

gb?

anyone knows if i can use 32gb card?

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[URL=http://www.speedtest.net][IMG]http://www.speedtest.net/result/693683800.png[/IMG][/URL]

.

Last I recall, 16 GB was the largest card for any unit.

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nüvi 3790T | Those who make peaceful revolution impossible, will make violent revolution inevitable ~ JFK

Does anyone know if there

Does anyone know if there are any performance differences when you store maps or POIs on the card? Faster? Slower? GPS-dependant?

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SD cards are known by Class, i.e. Class 2, 4, 6, and 10. These are further annotated by write speeds, each announcing those in megabytes. A Class 10 writes at 10 megabytes per second minimum. Read speeds are usually far higher.

That said, I use Class 4's in my nuvi with no lag for read speeds at all. They work well.

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nüvi 3790T | Those who make peaceful revolution impossible, will make violent revolution inevitable ~ JFK

On a lark I threw Europe

On a lark I threw Europe onto my MicroSD and it spent a long time redrawing as I zoomed in. My class 4 card didn't like the nüvi, but that's something I have to tinker with.

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"Anyone who is capable of getting themselves made President should on no account be allowed to do the job." --Douglas Adams

So I will change "newer units" to "some units".

muell9k wrote:
farrissr wrote:
pwohlrab wrote:

With newer units you will continue to get the prompt asking to install to internal memory. As long as you have pois on the card. It will not go away. You can not turn it off. It is another thing that Garmin took away. Either install to internal or live with the prompt.

Not on my 2450LM. You can tell it not to ask again!!!!

Not sure what is considered a "newer unit" perhaps you are referring to the 2012 series just recently released.

My 2460 will only ask once after I respond NO. I can remove the card, reboot without it, then reboot again with it inserted and the message will never appear.

The only time it will reappear is if I put an additional new POI on it, answer no again, and message never comes back.

There are a number of posts here referencing the problem and asking the question of how to get rid of the prompt. It seems to be model specific. It could also be firmware specific. I know it didn't get fixed on my 1350 by the latest update.

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Nuvi 2460LMT.

I Believe It's Model Specific

pwohlrab wrote:
muell9k wrote:
farrissr wrote:
pwohlrab wrote:

With newer units you will continue to get the prompt asking to install to internal memory. As long as you have pois on the card. It will not go away. You can not turn it off. It is another thing that Garmin took away. Either install to internal or live with the prompt.

Not on my 2450LM. You can tell it not to ask again!!!!

Not sure what is considered a "newer unit" perhaps you are referring to the 2012 series just recently released.

My 2460 will only ask once after I respond NO. I can remove the card, reboot without it, then reboot again with it inserted and the message will never appear.

The only time it will reappear is if I put an additional new POI on it, answer no again, and message never comes back.

There are a number of posts here referencing the problem and asking the question of how to get rid of the prompt. It seems to be model specific. It could also be firmware specific. I know it didn't get fixed on my 1350 by the latest update.

I believe your assumption is correct, the problem is model specific but not firmware specific.

I have 3 units, 660, 765T, and the 2460LMT.
I've answered NO to the prompt when asking to install to internal memory on each unit, the message always went away. It behaved the same after each firmware upgrade so that leads me to believe it is only model specific and has nothing to do with the firmware.

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Nuvi 2460LMT 2 Units

Try it.

alofficial wrote:

anyone knows if i can use 32gb card?

Try it in your unit. Can't hurt anything. I don't think anyone knows for sure what sd cards work including Garmin.

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Bobby....Garmin 2450LM

1490LMT Experiences

Since I was the original poster, I thought that I would post what I learned and my experiences.

First of all, the tip concerning the installation of the full JCV file on the SD was great. I placed the downloaded full file into the \Garmin\JCV directory on the SD card as suggested by Strephon_Alkhalikoi. I also ran some route simulations to verify that it is working. Junction View is a nice feature that I did not know the unit had as I had updated the map when I first received the 1490LMT and probably lost the Junction View function at that time.

With relation to my original question, here are the results with relation to files and folders on the SD:

* JPG files in the \JPEG directory will show in the picture viewer but if you associate a picture with a Favorite it will not stay associated after a restart. In order for this feature to work, the picture must be in the \JPEG folder on the unit.

* POI files in the \POI directory will show up but you will get a prompt each and every time that you start the unit. As someone else mentioned, these files are relatively small and are maybe best placed in the \POI directory on the unit.

* Voice, keyboards, Vehicles, and Text (language) files placed on the SD will not show on the unit. I did not check "help" files but I doubt that they would show, as well.

Someone asked about the files that I removed to make space on the unit. I found a lot of information on this subject and removed files from the help, Text, Voice, and keyboards for languages that were not either American or British. I also moved all pictures to the SD not associated with a favorite. I understand that you can also remove certain unused vehicles and some EULA files but I am waiting until the space problem arises again before I delete more files. I am currently with 127 Mb of open space...hopefully enough for a few more updates (I am currently on 2012.30).

Thanks again for everyone's help. Great information!

Slower

kalalau wrote:

Does anyone know if there are any performance differences when you store maps or POIs on the card? Faster? Slower? GPS-dependant?

I installed the lower 48 on the nuvi and the remainder of the 2012.3 and the JCV on the card. The boot-up time went from 15 seconds to 40 seconds. I have not noticed any other performance issues.

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1490LMT 1450LMT 295w

@spokybob

I formatted my 16GB class 4 card and transferred the files from the class 2 card (same size) to it. Boot time decreased significantly compared to the class 2 card. The map of Europe on the class 4 card still has a slight lag switching from basemap to detail map, but is still better than the class 2 card. The class 2 card sometimes took up to two minutes to switch from the basemap to detail map.

I'd recommend switching to a card that has a higher read speed, class 4 or higher.

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"Anyone who is capable of getting themselves made President should on no account be allowed to do the job." --Douglas Adams