Cloning method Discussion Thread: How to install a map update directly to a SD card.

 

NOTE: This article has been updated and added as a FAQ. Please refer to the updated article here:
FAQ: Garmin Maps | Cloning Method: Install a Map Update Directly to the SD Card.

I posted this over on the GPS Review forum and thought it might be useful to the POI Factory members. This technique was suggested by member Boyd on that forum. I took his idea and tested it with my two nuvis (755T and 855).

You may have already noticed a certain peculiarity in Garmin software. If you have a removable drive on your computer (SD card or thumb drive) and create a \Garmin folder at the root of this drive, then copy the file GarminDevice.xml from your nuvi into this folder, the Garmin programs like POI Loader and my.Garmin.com seem to recognize the removable drive as a nuvi. Boyd speculated that you might be able to use this quirk to fool the map update installer and directly install a map update to a SD card.

It took some experimentation and several tries, but I was able to install the complete map on SD with both of my nuvis. Both nuvis operate correctly with ALL of the NA map data on the SD card. Here is a summary of the steps I used to install maps directly to the SD card:

1) Do a complete backup of your nuvi BEFORE you attempt this procedure. This MAY allow you to recover your nuvi if something goes wrong.

2) Use WebUpdater to make sure you have the latest software on your nuvi before you try this. If you have old software, you will have trouble with the map download because my.Garmin.com will try to do a software update on your (fake nuvi) SD card prior to the map download!

3) Start with a clean SD card in your computer or SD card reader. Make sure it is formatted FAT32. Create the \Garmin folder. Connect your nuvi to the computer in data mode and copy file GarminDevice.xml from the \Garmin folder on the nuvi into the \Garmin folder on the SD card. [Nuvi 8xx series only: Copy the complete ASR folder and its contents from the \Garmin folder on the nuvi into the \Garmin folder of the SD card.]

4) Safely remove the nuvi from the computer, but leave the SD card mounted on the computer. Log into my.Garmin.com. To verify that the SD card is recognized as your nuvi, go to the myDashboard tab and click on "Scan for devices". Your SD card should show up as your nuvi model in the drop down box. (Note: If you didn't remove your real nuvi from the computer as suggested, it will appear twice in the drop down box ... once for the real nuvi and once for your fake nuvi SD card. You won't be able to tell which is which!)

5) On myGarmin, click on the myMaps tab, select the map download link and use option 2 (Map update installer). Proceed to download and install the map files to the SD card. When the map update installer completes, all new map files are on the SD card in the \Garmin folder: gmapprom.img, gmapprom.gma, gmapprom.unl. On some models you will also have files gmaptz.img, gmap3D.img and DnnnnnnnA.JCV (in the \Garmin\JCV folder). Make sure all files are sucessfully downloaded to the SD card before continuing.

6) If your nuvi supports Junction View, this would be a good time to check the DnnnnnnnA.JCV file that was downloaded to the SD card. If you got the small file and want the large one, you may as well replace it now. Use the link provided elsewhere in the forum to download the large JCV file and copy it to the SD card in the \Garmin\JCV folder. Delete the small JCV file that was downloaded by the map update installer.

7) Connect the nuvi to the PC in data mode and delete the following files from the \Garmin folder on the nuvi internal drive: gmapprom.img, gmapprom.gma, and gmapprom.unl. Also delete file GMAP3D.img and the complete \JCV folder and its contents if they are present on your nuvi. [Nuvi 8xx series only: Delete the ASR folder and its contents from the \Garmin folder of your nuvi.]

8) If present, copy file gmaptz.img from the SD card back into the \Garmin folder of the nuvi. [Nuvi 8xx series only: Copy the entire updated ASR folder and its contents from the SD card back into the \Garmin folder of the nuvi.]

9) On the SD card rename the following files gmapprom.img to gmapsupp.img, gmapprom.gma to gmapsupp.gma and gmapprom.unl to gmapsupp.unl. Delete file GarminDevice.xml from the SD card, so it will no longer show up as a fake nuvi in Garmin software.

10) Safely remove the SD card and nuvi from the computer. Install the SD card in the nuvi.

11) Boot the nuvi, go to Tools > Settings > map > map info and make sure the full NA map (and 3D map if your model supports it) show up and are checked.

12) Test the nuvi to make sure all map detail is working.

On the 755T, the detail NA maps, 3D map, and JCV file all work correctly from the SD card. The only file from the map download that has to be on the internal drive is the gmaptz.img time zone file. After completing this procedure with CN NA 2012.30, I had 3.5 GB of free space on the 755T's 4 GB internal drive.

On the 855, the speech recognition files are updated as part of the map update. The easiest way I found to handle this was to copy the ASR folder to the SD card, perform the map install, then copy the updated ASR folder back to the nuvi. These steps are included in the above procedure.

This procedure worked well for me, but be aware that you are removing your detail map files from the internal storage of your nuvi. TRY IT AT YOUR OWN RISK! Note that these steps are for the older 7x5 and 8x5 nuvis that do not have the hidden .system folder and enhanced map naming features. It seems likely that the procedure can be easily adapted to the other nuvi models of this generation like the 2xx, 7xx and 8xx. I am not sure what additional considerations there are for the newer 1xxx, 2xxx and 3xxx models that have the .system folder. If anyone tries this, please post your results here.

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Alan - Android Auto, DriveLuxe 50LMTHD, Nuvi 3597LMTHD, Oregon 550T, Nuvi 855, Nuvi 755T, Lowrance Endura Sierra, Bosch Nyon
3 4 5 6 7
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alandb wrote:

Did you attempt to install the full CN NA 2014.40? I believe your nuvi 350 is restricted to map files of 2 GB or less and the full NA 2014.40 map is larger than 2 GB. Try installing a smaller region (such as the lower 49) instead of the full NA and see what happens.

Thanks, I did lower 49,then lower 49 NE same thing.
it may be throwing things off I'm using a SD micro card out of my Android in a adapter then card reader/USB.

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Garmin nuvi 350 Lifetime Map Updates NT 2018.10

??

daman wrote:
alandb wrote:

Did you attempt to install the full CN NA 2014.40? I believe your nuvi 350 is restricted to map files of 2 GB or less and the full NA 2014.40 map is larger than 2 GB. Try installing a smaller region (such as the lower 49) instead of the full NA and see what happens.

Thanks, I did lower 49,then lower 49 NE same thing.
it may be throwing things off I'm using a SD micro card out of my Android in a adapter then card reader/USB.

Any other ideas????? should i try using a standard SD card right to my laptop?

--
Garmin nuvi 350 Lifetime Map Updates NT 2018.10

No difference

daman wrote:
daman wrote:
alandb wrote:

Did you attempt to install the full CN NA 2014.40? I believe your nuvi 350 is restricted to map files of 2 GB or less and the full NA 2014.40 map is larger than 2 GB. Try installing a smaller region (such as the lower 49) instead of the full NA and see what happens.

Thanks, I did lower 49,then lower 49 NE same thing.
it may be throwing things off I'm using a SD micro card out of my Android in a adapter then card reader/USB.

Any other ideas????? should i try using a standard SD card right to my laptop?

To a computer or other device there is absolutely no difference between a standard SD card and a micro SD card in an adapter.

--
GPSMAP 76CSx - nüvi 760 - nüvi 200 - GPSMAP 78S

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thrak wrote:
daman wrote:
daman wrote:
alandb wrote:

Did you attempt to install the full CN NA 2014.40? I believe your nuvi 350 is restricted to map files of 2 GB or less and the full NA 2014.40 map is larger than 2 GB. Try installing a smaller region (such as the lower 49) instead of the full NA and see what happens.

Thanks, I did lower 49,then lower 49 NE same thing.
it may be throwing things off I'm using a SD micro card out of my Android in a adapter then card reader/USB.

Any other ideas????? should i try using a standard SD card right to my laptop?

To a computer or other device there is absolutely no difference between a standard SD card and a micro SD card in an adapter.

One thing that is strange tho is when i insert the micro in the SD adapter then in my PC its not recognized,,but if i insert them two into a card reader/USB then the PC recognizes it,any idea why?

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Garmin nuvi 350 Lifetime Map Updates NT 2018.10

SD Card Apapter

daman wrote:

[One thing that is strange tho is when i insert the micro in the SD adapter then in my PC its not recognized,,but if i insert them two into a card reader/USB then the PC recognizes it,any idea why?

From what you describe it seems like the SD slot on your PC is not reading all the pin contacts on the SD card adapter. By inserting it into a USB card reader it is recognizing all the pins.
Simply only use the card reader. Hopefully the one you have (SD Adapter) is USB 2.0 compatible. If it's a USB 1.1 adding files to it will be much slower.

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Nuvi 2460LMT 2 Units

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muell9k wrote:
daman wrote:

[One thing that is strange tho is when i insert the micro in the SD adapter then in my PC its not recognized,,but if i insert them two into a card reader/USB then the PC recognizes it,any idea why?

From what you describe it seems like the SD slot on your PC is not reading all the pin contacts on the SD card adapter. By inserting it into a USB card reader it is recognizing all the pins.
Simply only use the card reader. Hopefully the one you have (SD Adapter) is USB 2.0 compatible. If it's a USB 1.1 adding files to it will be much slower.

I thought that too it wasn't reading the pins but if i insert another SD card NON adapter,, my PC reads it just fine,go figure.

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Garmin nuvi 350 Lifetime Map Updates NT 2018.10

BaseCamp for testing

If you have BaseCamp installed, you should be able use it to test the integrity of the map file on the SD card. Assuming you still have the SD card cloned, Basecamp will recognize the SD card as your nuvi and attempt to load the map file that is on it.

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

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No i don't, i followed the wright up exactly so the integrity should be good.

Happen to have the link to base camp?

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Garmin nuvi 350 Lifetime Map Updates NT 2018.10

Basecamp Link

daman wrote:

No i don't, i followed the wright up exactly so the integrity should be good.

Happen to have the link to base camp?

Here's the Link For Basecamp Download:
http://www.garmin.com/en-US/shop/downloads/basecamp

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Nuvi 2460LMT 2 Units

When using GE...

It detected the sd card automatically and installed updated maps on the sd card in my 765T. I know some are against GE but it worked great on latest update.

Apapter?

daman wrote:
muell9k wrote:
daman wrote:

[One thing that is strange tho is when i insert the micro in the SD adapter then in my PC its not recognized,,but if i insert them two into a card reader/USB then the PC recognizes it,any idea why?

From what you describe it seems like the SD slot on your PC is not reading all the pin contacts on the SD card adapter. By inserting it into a USB card reader it is recognizing all the pins.
Simply only use the card reader. Hopefully the one you have (SD Adapter) is USB 2.0 compatible. If it's a USB 1.1 adding files to it will be much slower.

I thought that too it wasn't reading the pins but if i insert another SD card NON adapter,, my PC reads it just fine,go figure.

That was exactly my point. The PC is not reading that particular SD card adapter.
Correct me if I am wrong, I assume the one that does work in the PC is a standard SD card. The one giving you problems is an SD adapter that the micro sd card fits into.
Sometimes thoses adapters can be touch & go.

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Nuvi 2460LMT 2 Units

One other thing to try.

Do you still have the original map (2014.30 or earlier) on the internal storage of your nuvi? Other users have reported problems when the nuvi can see 2 versions of the map. I have not had the problem, but it is worth a try to rename the old files (don't delete them yet ... just in case you don't get this resolved, you can rename them back). Rename the files to something like gmapprom.gma.sav, gmapprom.unl.sav, gmapprom.img.sav. Then try the card again. Also double check your file names on the card and make sure they are properly named to gmapsupp.*

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

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muell9k wrote:
daman wrote:
muell9k wrote:
daman wrote:

[One thing that is strange tho is when i insert the micro in the SD adapter then in my PC its not recognized,,but if i insert them two into a card reader/USB then the PC recognizes it,any idea why?

From what you describe it seems like the SD slot on your PC is not reading all the pin contacts on the SD card adapter. By inserting it into a USB card reader it is recognizing all the pins.
Simply only use the card reader. Hopefully the one you have (SD Adapter) is USB 2.0 compatible. If it's a USB 1.1 adding files to it will be much slower.

I thought that too it wasn't reading the pins but if i insert another SD card NON adapter,, my PC reads it just fine,go figure.

That was exactly my point. The PC is not reading that particular SD card adapter.
Correct me if I am wrong, I assume the one that does work in the PC is a standard SD card. The one giving you problems is an SD adapter that the micro sd card fits into.
Sometimes thoses adapters can be touch & go.

Ok,ill get a standard SD card(yes that's the one that works)

alandb wrote:

Do you still have the original map (2014.30 or earlier) on the internal storage of your nuvi? Other users have reported problems when the nuvi can see 2 versions of the map. I have not had the problem, but it is worth a try to rename the old files (don't delete them yet ... just in case you don't get this resolved, you can rename them back). Rename the files to something like gmapprom.gma.sav, gmapprom.unl.sav, gmapprom.img.sav. Then try the card again. Also double check your file names on the card and make sure they are properly named to gmapsupp.*

No just one map in unit, current,lower 49 NW.

in basecamp its not recognizing the SD card as the nuvi,but as far as i can tell itrecognizingng the maps.

no big deal i guess i was just trying to see if i could get this to work.

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Garmin nuvi 350 Lifetime Map Updates NT 2018.10

map on unit.

Well, I guess I used the wrong adjective in my previous post. I should have said "previous" map rather than "Original". The point is if you have an older map version in internal storage and the new version on the SD card, your nuvi may not like it. Temporarily rename the map in internal storage and see if it will recognize the map on the SD.

In terms of getting BaseCamp to see the card, do you still have the GarminDevice.xml file on the card? If not, put it back on the card and try BaseCamp again.

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

The method does work.

Maybe the below instructions will make it work.
Attach your Nuvi 350 to the PC and copy the GarminDevice.XML file to a folder on your PC, once done disconnect the Nuvi from the PC

1- Insert the SD card that is recognized by your PC and format it to Fat32.
2- Create a folder on that card named Garmin.
3- Copy the saved GarminDevice.xml file on your PC into the SD cards Garmin Folder.
4- Downlaod the latest Mapupdater program(3.3.3)
http://download.garmin.com/lmu/GarminMapUpdater.exe
5- Run the MapUpdater program and select the map size you want (it can't be Full North America)
6- Once the download is complete go into the Garmin Folder and rename the 3 files to gmapsupp instead of the downloaded gmapprom names.
7-Check the gmapsupp.img and make sure it doesn't exceed 2GB since your Nuvi 350 can't read it.
8- Now remove the SD card from the PC and connect your Nuvi. Rename the 3 gmapprom files to
gmapprom.oldimg
gmapromm.oldunl
gmapromm.old gma

Now Disconnect the Nuvi, insert the SD card and reboot. The new map should now be recognized by your 350.

--
Nuvi 2460LMT 2 Units

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muell9k wrote:

Maybe the below instructions will make it work.
Attach your Nuvi 350 to the PC and copy the GarminDevice.XML file to a folder on your PC, once done disconnect the Nuvi from the PC

1- Insert the SD card that is recognized by your PC and format it to Fat32.
2- Create a folder on that card named Garmin.
3- Copy the saved GarminDevice.xml file on your PC into the SD cards Garmin Folder.
4- Downlaod the latest Mapupdater program(3.3.3)
http://download.garmin.com/lmu/GarminMapUpdater.exe
5- Run the MapUpdater program and select the map size you want (it can't be Full North America)
6- Once the download is complete go into the Garmin Folder and rename the 3 files to gmapsupp instead of the downloaded gmapprom names.
7-Check the gmapsupp.img and make sure it doesn't exceed 2GB since your Nuvi 350 can't read it.
8- Now remove the SD card from the PC and connect your Nuvi. Rename the 3 gmapprom files to
gmapprom.oldimg
gmapromm.oldunl
gmapromm.old gma

Now Disconnect the Nuvi, insert the SD card and reboot. The new map should now be recognized by your 350.

Thank you!!!

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Garmin nuvi 350 Lifetime Map Updates NT 2018.10

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muell9k wrote:

8- Now remove the SD card from the PC and connect your Nuvi. Rename the 3 gmapprom files to
gmapprom.oldimg
gmapromm.oldunl
gmapromm.old gma

I'm a little nervous with step 8 renaming files in the unit, is this going to corrupt anything later down the line? why doe these need renaming? thanks.

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Garmin nuvi 350 Lifetime Map Updates NT 2018.10

Risk

If you follow the steps carefully everything should work. The cloning method has been successfully used by numerous users on many different garmin models. That said, whenever you manipulate files in nuvi storage (by copying, renaming, deleting, etc.), there is always risk that something could go wrong. So if this makes you nervous, you should probably avoid the cloning method and just use MapUpdater to install the map directly on your device.

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

.

Ok yea it would be just my luck,,thanks!

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Garmin nuvi 350 Lifetime Map Updates NT 2018.10

Very Useful

Very useful info.
Thanks.
Fred

Renaming Of Files

daman wrote:
muell9k wrote:

8- Now remove the SD card from the PC and connect your Nuvi. Rename the 3 gmapprom files to
gmapprom.oldimg
gmapromm.oldunl
gmapromm.old gma

I'm a little nervous with step 8 renaming files in the unit, is this going to corrupt anything later down the line? why doe these need renaming? thanks.

The purpose of renaming the files was so the Nuvi wouldn't recognize the map on your Nuvi since I don't know what version map you have there.
I didn't want any conflict with the 2014.40 map on the SD and the current map on the Nuvi. This would confirm the Clone Method worked.

To be safe, you can always back up the files before renaming. It's always smart to have a complete backup of the current files on your Nuvi.

For your information the Nuvi will still boot up without a City Navigator map on it, but the gmapbmap.img MUST BE PRESENT on the Nuvi so it has a map to load should it not find a working map.
That gmapbmap is a world map with little details.

If you are fearful in renaming the files, I do respect your apprehension in doing so. I agree with alanb that it would be safest for you is use the Mapupdater and send the map directly to the Nuvi.

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Nuvi 2460LMT 2 Units

2GB limit

I'm just wondering, other than the 350, what other units have the 2GB limit concerning the map size it can read ?

--
Nüvi 255WT with nüMaps Lifetime North America born on 602117815 / Nüvi 3597LMTHD born on 805972514 / I love Friday’s except when I’m on holidays ~ canuk

660 has 2Gb limit

I hit the limit for the first time on this last map upgrade, last week

--
A 2689LMT in both our cars that we love... and a Nuvi 660 with Lifetime Maps that we have had literally forever.... And a 2011 Ford Escape with Nav System that is totally ignored!

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muell9k wrote:
daman wrote:
muell9k wrote:

8- Now remove the SD card from the PC and connect your Nuvi. Rename the 3 gmapprom files to
gmapprom.oldimg
gmapromm.oldunl
gmapromm.old gma

I'm a little nervous with step 8 renaming files in the unit, is this going to corrupt anything later down the line? why doe these need renaming? thanks.

The purpose of renaming the files was so the Nuvi wouldn't recognize the map on your Nuvi since I don't know what version map you have there.
I didn't want any conflict with the 2014.40 map on the SD and the current map on the Nuvi. This would confirm the Clone Method worked.

To be safe, you can always back up the files before renaming. It's always smart to have a complete backup of the current files on your Nuvi.

For your information the Nuvi will still boot up without a City Navigator map on it, but the gmapbmap.img MUST BE PRESENT on the Nuvi so it has a map to load should it not find a working map.
That gmapbmap is a world map with little details.

If you are fearful in renaming the files, I do respect your apprehension in doing so. I agree with alanb that it would be safest for you is use the Mapupdater and send the map directly to the Nuvi.

I have lower 49 NE 2014.40 on garmin,i loaded lower 49 2014.40 on SD card.

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Garmin nuvi 350 Lifetime Map Updates NT 2018.10

2 GB limit.

canuk wrote:

I'm just wondering, other than the 350, what other units have the 2GB limit concerning the map size it can read ?

See this Garmin FAQ. Also, some other models (like the 8xx nuvi's) may have a 2 GB limit unless they have the newest firmware/software.

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

Thanks I'll trying

Thanks I'll trying

--
Gattina11

Double Coverage Of Same Map Version.

daman wrote:

I have lower 49 NE 2014.40 on garmin,i loaded lower 49 2014.40 on SD card.

There is your problem, you have overlapping coverage using the same map version.

If you rename the gmapprom files on the 350 as I described, and have the SD card inserted,once you reboot the only map that will appear is the 2014.40 lower 49 on the map information screen.
When you have double coverage of an area it also affects your search function and should be avoided.

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Nuvi 2460LMT 2 Units

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muell9k wrote:
daman wrote:

I have lower 49 NE 2014.40 on garmin,i loaded lower 49 2014.40 on SD card.

There is your problem, you have overlapping coverage using the same map version.

If you rename the gmapprom files on the 350 as I described, and have the SD card inserted,once you reboot the only map that will appear is the 2014.40 lower 49 on the map information screen.
When you have double coverage of an area it also affects your search function and should be avoided.

Ok but one is just NE and one on SD is the whole lower 49,or that don't matter?

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Garmin nuvi 350 Lifetime Map Updates NT 2018.10

Rename.

Having 2 maps that cover the same or overlapping regions can cause problems. That is why muell9k and I both recommended that you rename the map in internal storage.

Have you checked to see if there is room in internal storage to hold the lower 49 map? If so, there is no reason to use the SD card at all.

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

Nope

Renamed maps in internal storage with additional .sav extension. Renamed maps on SD card per instructions. Unit still doesn't see maps on SD card.

--
GPSMAP 76CSx - nüvi 760 - nüvi 200 - GPSMAP 78S

Which device?

thrak wrote:

Renamed maps in internal storage with additional .sav extension. Renamed maps on SD card per instructions. Unit still doesn't see maps on SD card.

Which device are you trying to update, your nuvi 200 or 760? Both your 200 and 760 will be auto-offered a map update to SD card so you don't need to do this more complex clone method.

https://support.garmin.com/support/searchSupport/case.faces?...

Or do you have another device that's part of the above link's "not SD supported" list in which you're trying to install a cloned map?

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alandb wrote:

Having 2 maps that cover the same or overlapping regions can cause problems. That is why muell9k and I both recommended that you rename the map in internal storage.

Have you checked to see if there is room in internal storage to hold the lower 49 map? If so, there is no reason to use the SD card at all.

Ok, my original thinking was have the lower 49 NE in Garmin to save room then if i needed more updated info for traveling i could insert the SD card and give me all of the lower 49.

obviously that wont work...

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Garmin nuvi 350 Lifetime Map Updates NT 2018.10

.

To accomplish what you want you need to install a portion of the map in internal storage, then install the remaining regions of NA as a supplemental map on a SD card. It doesn't matter whether you use cloning or other methods (MapInstall for example) to do this. I think the key is to avoid overlapping regions.

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

Your Choice?

daman wrote:
alandb wrote:

Having 2 maps that cover the same or overlapping regions can cause problems. That is why muell9k and I both recommended that you rename the map in internal storage.

Have you checked to see if there is room in internal storage to hold the lower 49 map? If so, there is no reason to use the SD card at all.

Ok, my original thinking was have the lower 49 NE in Garmin to save room then if i needed more updated info for traveling i could insert the SD card and give me all of the lower 49.

obviously that wont work...

I can understand your reluctance on renaming the files if it were a newer unit that had many new features and additional files. The 350 is a simple file structure so renaming the files should not pose a problem and you will have the full lower 49 working on the SD card. Many people have their maps on the SD card due to internal memory shortage and works perfectly fine for them.

Apparently there is not enough room on the 350 for the complete lower 49 states, and is the reason you put it on the SD card.

We can only suggest to you what will work, but it's ultimately your choice if you want to do it.
My parting suggestion to you is backup the map files on the Nuvi to the PC, then you can rename them on the Nuvi or even delete them. Use the SD card for the lower 49 and you will be good to go.

--
Nuvi 2460LMT 2 Units

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Ok thanks for your help..

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Garmin nuvi 350 Lifetime Map Updates NT 2018.10

760

I was updating my 760. The map is currently installed on the unit. When I tried to update to the new maps I got a message stating there isn't enough room for the new maps.

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GPSMAP 76CSx - nüvi 760 - nüvi 200 - GPSMAP 78S

Thanks alan

alandb wrote:

See this Garmin FAQ. Also, some other models (like the 8xx nuvi's) may have a 2 GB limit unless they have the newest firmware/software.

That's exactly what I was looking for smile

--
Nüvi 255WT with nüMaps Lifetime North America born on 602117815 / Nüvi 3597LMTHD born on 805972514 / I love Friday’s except when I’m on holidays ~ canuk

Me Too

JanJ wrote:

I hit the limit for the first time on this last map upgrade, last week

With my 660, I could only install the lower 49. Oh well, that's what I get for stubbornly sticking with an old GPS. neutral

--
Tampa, FL - Garmin nüvi 660 (Software Ver 4.90), 2019.30 CN NA NT maps | Magellan Meridian Gold

Still like my 660

Gary A wrote:
JanJ wrote:

I hit the limit for the first time on this last map upgrade, last week

With my 660, I could only install the lower 49. Oh well, that's what I get for stubbornly sticking with an old GPS. neutral

Your 660 may be old, but it's still one of my favorite models. I also once owned a 670 and sold it, I wish I still had that one since it had 4gb memory to hold European maps unlike the 660 that only has 2gb.

I use the 660 as a backup since acquiring my 2460 that has a 5" screen. In my old age I'm having difficulty seeing the 660's 4" screen.

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Nuvi 2460LMT 2 Units

Nuvi 660 Cloning Method

I may have missed this at the top, but tried using the Cloning Method for NA 2014.40 on my Nuvi 660 w/8GB SD Card. Everything worked great until applying the GarminMapUpdater version 3.3.3. Even though the SD Card is 8GB and was empty (except for the copied over GarminDevice.xml file), GaminMapUpdater still felt the device was limited to a 2GB map and would not allow me to put the entire NA 2014.40 onto the SD Card. I was able to get all of the US & Canada, but not the rest of North America. The entire NA 2014.40 file size was 2,204,032KB. The US & Canada file size was 1,972,288KB. Did I do something wrong, or is the 2GB size limit from the device's GarmineDevice.xml file cause this limitation, and no way to get around it?

Nuvi 660 Cloning

I also could not clone the entire NA 2014.40 map into my 8GB SD Card. The Garmin Map Updater 3.3.3 said it would not allow a map exceeding 2GB onto the 8GB SD Card. Tried splitting the maps; put the Lower 49 NE in the device, then did west coast in the SD card, but when testing, I could only pull up states & addresses consistent with the Lower 49 NE (no west coast states/cities would come up). So I guess the Nuvi 660 is limited to a single map not exceeding 2GB (unless I did something wrong). Did I do something wrong?

GarminDevice.xml may indeed be the limiting factor...

93celicaconv wrote:

Did I do something wrong, or is the 2GB size limit from the device's GarmineDevice.xml file cause this limitation, and no way to get around it?

You may have hit upon something. GarminDevice.xml is an identifier of sorts when it comes to Garmin software (WebUpdater, MapUpdater, etc). It contains device info that is polled by the Garmin software when updating it in numerous ways. There may indeed be a way to fool the software into believing the attached unit (which is actually the SD Card) has different capabilities but not having a unit as old at the 3xx/6xx, series, I have no way to even begin experimenting with the values/part numbers/etc in the xml code to accomplish trying to get a larger (than 2GB) mapset onto the SD Card. Maybe another user could have luck with it.

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nuvi 760, nuvi 765T, nuvi 855, nuvi 3790LMT, nuvi 3490LMT - SoCal area

Interesting Point

93celicaconv wrote:

I also could not clone the entire NA 2014.40 map into my 8GB SD Card. The Garmin Map Updater 3.3.3 said it would not allow a map exceeding 2GB onto the 8GB SD Card. Tried splitting the maps; put the Lower 49 NE in the device, then did west coast in the SD card, but when testing, I could only pull up states & addresses consistent with the Lower 49 NE (no west coast states/cities would come up). So I guess the Nuvi 660 is limited to a single map not exceeding 2GB (unless I did something wrong). Did I do something wrong?

Did you confirm that the west coast map on the SD card was RENAMED to "gmapsupp.img".
Using the clone method will install the files as gmapprom,img, gmapprom.unl, and gmapprom.gma.
You will need to rename those 3 files to gmapsupp with the exiting extension. Your 660 will not recognize a gmapprom file on your SD card.

Two other things to check. Have you confirmed by attaching the 660 to your PC that the SD card is recognized and the West Coast map is present in the ”Garmin” folder? Next check if the West Coast map is present in the Map Info page and both maps have a check mark next to it.

Lastly, if you have maps that cover the same area (over lapping states), there will be issues in using the search function since it appears it confuses the Nuvi on which map to use.

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Nuvi 2460LMT 2 Units

It's the 660's 2GB filesize limit

93celicaconv wrote:

I also could not clone the entire NA 2014.40 map into my 8GB SD Card. The Garmin Map Updater 3.3.3 said it would not allow a map exceeding 2GB onto the 8GB SD Card. Tried splitting the maps; put the Lower 49 NE in the device, then did west coast in the SD card, but when testing, I could only pull up states & addresses consistent with the Lower 49 NE (no west coast states/cities would come up). So I guess the Nuvi 660 is limited to a single map not exceeding 2GB (unless I did something wrong). Did I do something wrong?

The new 2014.40 full North America map image file is larger than 2GB. See from Garmin:

http://support.garmin.com/support/searchSupport/case.faces?supportPage=nuvi%20310&caseId={b4b6e4a0-f1af-11df-ea12-000000000000}&locale=en_US

10/07/2013

Garmin has new mapping products that have map file sizes that are larger than 2GB. The following is a list of Garmin's older model devices that support an SD card larger than 4GB but are not able to use a map file that is larger than 2GB.
◦nuvi 300 Series
◦nuvi 600 Series
◦nuvi 5000
◦StreetPilot c500 Series
◦OEM zumo Series

Interpretation of 2GB Map Limit

The 2GB limit is a fact for the Nuvi models indicated by CraigW above.

However, what is considered a map size image?
Although the two map segments do exceed the 2GB limit when combined, does the Nuvi recognize it as one map or two is the question.
Since the full North America 2014.40 is the first map
to exceed 2GB the answer will lie with someone who has split the map between internal memory and the SD card.

Member 93celicaconv is a good candidate to answer that question, but needs to respond to my earlier post if the map on the SD card was renamed properly and installed in the Garmin folder on the SD card.

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Nuvi 2460LMT 2 Units

Ah

muell9k wrote:

The 2GB limit is a fact for the Nuvi models indicated by CraigW above.

However, what is considered a map size image?
Although the two map segments do exceed the 2GB limit when combined, does the Nuvi recognize it as one map or two is the question.
Since the full North America 2014.40 is the first map
to exceed 2GB the answer will lie with someone who has split the map between internal memory and the SD card.

Member 93celicaconv is a good candidate to answer that question, but needs to respond to my earlier post if the map on the SD card was renamed properly and installed in the Garmin folder on the SD card.

Ah, I didn't read deeply enough into the earlier questions and answers. I agree that the first thing to check is that when the remaining bits of the map were installed to the SD card with GarminMapUpdater using the clone method, were the files renamed? The nuvi certainly can't handle two gmapprom files.

Another thought/question: Are we assuming that GarminMapUpdater was used twice, once for installation to the nuvi (standard method) and once to the SD card (clone method)?

If this method does not work, then try not using the clone method. My thought:

1) Download 2014.40 to both Device and Computer: Install the Lower 49 states (or whatever fits) to the nuvi storage using GarminMapUpdater while installing all of North America to the computer. The nuvi's map file will be gmapprom.

2) Use MapInstall to install Canada and Alaska (or whatever the remainder is that wasn't installed in step 1) from the computer to the SD card. This SD card's map file will be gmapsupp and no manual file renaming is needed.

3) Then fire up the nuvi and see that both Lower 49 and Canada/Alaska are checked.

Now, can addresses be searched and found for all of NA? If so, things are pretty good but a further test would be to see if a route can be created that crosses from one map to the other, say Boise to Prince George.

Regarding MapInstall, I've only used it with maps used with Mapsource. Will MapInstall work the same way with Maps installed to a computer that only has BaseCamp?

you would think that Garmin

you would think that Garmin would figure out the people like some of the older units and would prefer to keep them and use a SD or micro SD card for their maps....

sorry, forgot that Garmin would rather sell more units...

660 Will Read Map Over 2GB - If In Segments

I can confirm the Nuvi 660 can read the same map that exceeds 2gb limit, AS LONG AS IT IS BROKEN UP INTO SEGMENTS.

As an experiment I used Mapupdater to download the full North America map to my PC.
I then used MapInstaller to create a map of the LOWER 48 states and Caribbean ONLY, I then sent it to the 660's internal memory (gmapprom.img).

Next I used MapInstaller again to copy Alaska, Hawaii, Canada, and Mexico and sent that to the SD card Garmin\gmapsupp.img).
I named that map exactly that “Alaska, Hawaii, Canada, and Mexico”. It transferred the map to the SD card.
I then opened the Map Info page and both maps were present and checked off.

The 660 is quite old so it does not have the ability to change country when doing a search, you must know the name of the state where your city is located in Mexico and Canada. I tried several cities in Mexico and Canada and the search function worked properly

This proves that the 660 can read a map exceeding 2GB, I’m sure the 3XX series would work the same.
I’m NOT sure if it would work on the or Nuvi 5000, StreetPilot C500 Series, or the OEM Zumo Series.

CraigW wrote:

Regarding MapInstall, I've only used it with maps used with Mapsource. Will MapInstall work the same way with Maps installed to a computer that only has BaseCamp?

Sorry I can’t answer that, I’m not a fan of Basecamp and continue to use Mapsource

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Nuvi 2460LMT 2 Units

never had a problem..

Got a c530, install the bulk of my maps to the sd card.

Excellent news

muell9k wrote:

I can confirm the Nuvi 660 can read the same map that exceeds 2gb limit, AS LONG AS IT IS BROKEN UP INTO SEGMENTS...

Great news. So we can confirm that the quite old models unable to access 2GB+ files can still install all of North America by dividing the map between nuvi and an SD card--and that the clone method is not needed to do this.

Now I wonder with your test device with two maps, if you could create a route from your location in the Lower 48 (or shorten the route by doing a SET LOC of Boise ID) to Fairbanks Alaska. Both the start and finish are in the US but the route will have to use data from both installed maps.

PS--I forgot to welcome you earlier, 93celicaconv! It's always great to welcome another Cheesehead to The (not Cheese) Factory web site. Good luck installing all of North America and shout back if more help is needed.

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