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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 - Nuvi 3597LMTHD, Oregon 550T, Nuvi 855, Nuvi 755T, Lowrance Endura Sierra
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Very intersting. Thanks for the clear and detailed post.

...

You've put it together very well. This should be put in the FAQ!

--
Michael -- Nuvi 755T

My friend, you deserve a medal for this !

I'm sure the Powers That Be over at POI Factory will agree ?

--
Ain't nuthin' never just right to do the things you wanna do when you wanna do them, so you best just go ahead and do them anyway ! (Rancid Crabtree, from Pat F McManus fame)

,

Thanks for the detailed information and spending all the time working it all out for everyone.

Thanks for this useful

Thanks for this useful information.

--
Kenneth Forde

Some caution

While this will work in most cases, I would advise some caution as SD cards can go bad or if you bought some fake SD cards, it might not work optimally though.

Excellent write up alandb ... I thought Garmin had disabled this method when I tried doing this with the JCV fiasco couple of releases ago, but it works now!

Installing to nuvi 855.

I spent some time today trying this with my nuvi 855. In general the procedure worked the same way as it did on the 755T. But I did run into one issue. In addition to maps, the map update installed some updated speech recognition files in the \Garmin\ASR folder. I found the best way to handle this was to copy the ASR folder to the SD card, update the maps, then copy the updated ASR folder back to the nuvi. I have included these additional steps in the original document.

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Alan - Nuvi 3597LMTHD, Oregon 550T, Nuvi 855, Nuvi 755T, Lowrance Endura Sierra

Thanks

Thanks for sharing this useful info.

--
nuvi 2460LMT

kewl

kewl

1490t

alandb wrote:

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.

I successfully used your procedures on my unit. This freed up my unit memory for the large JCV file. Not all file names appeared on my unit.
I have a problem with my older XP. It will not read the MiniSd card in the (F:) drive slot , so I have to leave it in the Garmin. Then it will read the Removable Disk (K:)

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1490LMT 1450LMT 295w

Time zone file.

I just noticed on my 755T that the timezone file (gmaptz.img) was not showing up on the diagnostics inventory screen. The time zones and time function seemed to be working correctly with the file on the SD card. But to be safe I moved the file from the SD card back to the nuvi. It now shows up on the diagnostics screen.

I modified the original document to reflect this change.

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Alan - Nuvi 3597LMTHD, Oregon 550T, Nuvi 855, Nuvi 755T, Lowrance Endura Sierra

Alandb

I tried it again and successfully this time. I have the large JCV file and all 50 states plus Canada & Mexico & the Bahamas.
Thanks

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1490LMT 1450LMT 295w

Use the SD adapter

spokybob wrote:

It will not read the MiniSd card in the (F:) drive slot , so I have to leave it in the Garmin. Then it will read the Removable Disk (K:)

Also, make sure you have the latest OS updates from MS. My XP Pro has no problem reading the card.

Unless you have a non-legal version of XP...

--
nüvi 3790T | nüvi 775T | Those who make peaceful revolution impossible, will make violent revolution inevitable ~ JFK

XP was preloaded on this computer.

I'm using XP media center version, version 2002 with service pack 3. BTW, my older HDTV will not read the Micro SD card either. I have no problem with SD cards.
I do use the adapter

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1490LMT 1450LMT 295w

Sounds like the card reader(s) then

Have you tried a different (newer) one?

--
nüvi 3790T | nüvi 775T | Those who make peaceful revolution impossible, will make violent revolution inevitable ~ JFK

One other thing...

I bought a SanDisk 4 gig micro card , and adapter yesterday, and it wouldn't read, or format. I swapped the adapter to an older one and it worked.

May work for you as well!

--
nüvi 3790T | nüvi 775T | Those who make peaceful revolution impossible, will make violent revolution inevitable ~ JFK

AH HAH

I have a USB flash drive that accepts the MicroSD/SD adapter. It works with all my microSD cards.

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1490LMT 1450LMT 295w

SD map folder.

Spokybob, did you do this install for your 1490T or the 295W? If it was your 1490T, what folder on the SD card did the Garmin map update installer put the maps in? Did you leave them in that location or move them to a different folder? Did you rename the installed maps from gmapprom.* to gmapsupp.* as suggested in the procedure?

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Alan - Nuvi 3597LMTHD, Oregon 550T, Nuvi 855, Nuvi 755T, Lowrance Endura Sierra

Tried it on the 1390T also Now a Brick.....

I was able to install the maps from the site onto the SD card Deleted the files from the 1390T HIDDEN .System folder and now I have a brick, does not see any maps. I can fix this just dicouraged that it doesn't see the files. I renamed them to supp and it still does not see them, looks great for disk space not so great for functionality.

Any Ideas anyone?????? rolleyes

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Garmin 3597 LMTHD

My 1490t

alandb wrote:

Spokybob, did you do this install for your 1490T or the 295W? If it was your 1490T, what folder on the SD card did the Garmin map update installer put the maps in? Did you leave them in that location or move them to a different folder? Did you rename the installed maps from gmapprom.* to gmapsupp.* as suggested in the procedure?

I don't remember each & every step that I employed. I did rename the gmapprom.img to gmappsupp.img.
I have 4 folders on the card
.System (15.8MB)\gupdate and locales
Garmin(2.15GB)\JCV folder & the ****.gma and gmapsupp.img
Map(1.35GB)\ the ****.gma and gmapsupp.img
Voice(15.5MB) \ English_American_Jill.vpm

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1490LMT 1450LMT 295w

1xxx maps on SD

TMan65, sorry to hear that this didn't work for you. I don't have access to a nuvi 1xxx series with lifetime maps. I wish I did so I could help you figure it out. I suspect the problem has to do with the folder/file names on the SD. What folders did the map installer create on your SD card? What files were downloaded to each folder?

Just going by spokybob's post, it looks like you might need to rename the map files from gmapprom.*** to gmapsupp.***, then move them into a \MAP folder, or perhaps \Garmin.

--
Alan - Nuvi 3597LMTHD, Oregon 550T, Nuvi 855, Nuvi 755T, Lowrance Endura Sierra

This is what I saw

I took the Garmin folder copied to the SD card.

No Garmin just SD card now.

Ran the latest Lifetime Map updater tool, it asked if I wanted to reinstall maps I said yes.

It created a Hidden .System folder and made 4 new files same files that were on the original Internal .System folder gmapprom.gma, gmapprom.img, gmapprom.unl and GMAPTZ.IMG. It also Made a /JVC folder in .System (.system/jvc) and put the newest Junction view file there D3153040A.JCV.

Map folder is Blank on original drive.

No map folder nothing else.

So now that I deleted these files from my garmin memory I have NO map version at all and no map detail.

So I plugged it back in (garmin that is) and reran Update to the garmin again and now with a Full internal memory card the maps are back with full detail, and data about the maps now appear again on the system info tabs (before when on the SD card they were all blanked out)

When I check Map Info now I have CN North America NT 2012.30 US& Canada again, I can see the roads again and it looks like a garmin again.

So it doesn't like something but I am not sure what it doesn't like????

I wonder if the unit would boot if I move all files to the 8 gig SD card?

--
Garmin 3597 LMTHD

Why not?

It should boot, no reason not to. Just name the card the same, and copy the files.

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nüvi 3790T | nüvi 775T | Those who make peaceful revolution impossible, will make violent revolution inevitable ~ JFK

Awesome tutorial

Worked like a charm for my nuvi 350 and 650. The only thing I did differently was rename the files on the device instead of deleting them (renamed them old-* for all).

A good check is to make sure the device is pulling the mas from the card. Eject the SD card at the "Tools > Settings > map > map info" area and you'll see it disappear. Re-insert the SD card and after a few moments it should re-appear. Boom.

Great write up.

Garmin 1350 lmt - using this method to install to SD

Wow ... after hours of failure using Garmin Lifetime Updater to update Garmin 1350lmt with SD card to full 49 states + Canada 2013.20 ... alandb's method worked.
For the 1350 there are some DIFFERENT PROTOCOLS.
The files deleted from and copied to the Nuvi 1350 are in the /.system folder (not the Garmin folder).
Using Lifetime Updater to install directly to the SD card, a folder SD/.system and a folder SD/Garmin are created.
I moved the Gmapprom files on the SD card from the SD/.system folder to the SD/Garmin folder and renamed them to Gmapsupp. The SD card also has to have a :/Map folder created (empty). The SD:/system folder can then be deleted.
Thanks alandb you're work is much appreciated !

Cloning method for map install

supe97, I am glad you were able to adapt the cloning method for map install to SD card to the 1xxx nuvi series. I don't have one of the newer nuvi models with the hidden .system folder to test with, so I was not sure if the method worked on the newer nuvi's.

I am guessing the map files could have been copied to the \map folder and named anything you want with the corect extensions ... not sure they needed to go in \garmin as gmapsupp on these units.

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Alan - Nuvi 3597LMTHD, Oregon 550T, Nuvi 855, Nuvi 755T, Lowrance Endura Sierra

Thanks for this Great

Thanks for this Great information

--
Montana 650,62S,1450,Etrex Venture Hc

1350lmt SD card map configs

alandb
You're right on both counts. The map can be in the SD/Map folder and it can have a personalized name.

Going further, I tested the ability of the 1350 to use more than one map from the SD card. I was using three different regions of the 2013.20 North American map as three different maps.
I could only get the 1350 to recognize one of the two SD maps along with a map in the NUVI. This agrees with other users findings in other forums.
I'm very happy with the unit now, thanks to you.

Interesting option. I was

Interesting option. I was trying to install Europe maps to the sd card on my 3490LMT with my North America maps still in the Nuvi.

Worked today on my 855

Sorry to reopen an old thread.

After several frustrating tries using either Lifetime updater, Garmin Map Updater v3.1.14 and Garmin Express and none worked. Apparently my 855 now does not have sufficient room anymore. The 2014.10 is 2.4GB in size. I did a search on POI and found this thread.

Followed the directions to a point, the exception is/was that Garmin Express started automatically and downloaded to the SD card. I had created the Garmin folder on the SD card.

I have one question though. When the next update comes out, how do I download it? Will Garmins "whatever program" recognize that the map is installed on the SD card or will I have to do the same procedure again?

A BIG thanks to "alandb" for the comprehensive guide to install to SD.

--
Nuvi 855LMT and Nuvi 3790LMT

Been using your appended

Been using your appended version of this since you posted the steps.....

Works Beautifully!!

With this version I'm going one step further... I have 2 SD cards... and I alternate between them.... I left the older maps on other card.... and put the needed directories and files on the new SD Card... and did the map upgrade on that... After renaming the files, I swapped SD Cards....

This way, should something untoward happen with SD Card in unit now, I can downshift to the last version maps as simple as turning off the Garmin, swapping SD Card, and turning it back on again!!

Thanks ever so much, Alan for your insightful and Clear Post!

--
2x Nuvi 660'sOne with -- Lifetime Maps -- Lifetime Traffic And a 2011 Ford Escape with Nav System that Doesn't support External POI's BOO HOO!

Melaqueman... I encountered

Melaqueman... I encountered the same question as you, and here's what I did....

Two different approaches...

1. Delete the three map files, and put the SD card in a USB port and it will download the new files... Rename them as per instructions... then put it in the Garmin....

2. Make a 2nd SD Card with Garmin directory and files... It will see that... Rename files and put in garmin...

I use this second approach (Alternate between 2 cards) this way, I can always fall back on last map version if needed...

Jan

--
2x Nuvi 660'sOne with -- Lifetime Maps -- Lifetime Traffic And a 2011 Ford Escape with Nav System that Doesn't support External POI's BOO HOO!

Good idea!

JanJ wrote:

Melaqueman... I encountered the same question as you, and here's what I did....

Two different approaches...

1. Delete the three map files, and put the SD card in a USB port and it will download the new files... Rename them as per instructions... then put it in the Garmin....

2. Make a 2nd SD Card with Garmin directory and files... It will see that... Rename files and put in garmin...

I use this second approach (Alternate between 2 cards) this way, I can always fall back on last map version if needed...

Jan

Much appreciated, good idea especially since SD cards are dirt cheap these days.

BTW, when I get the properties for the Garmin folder on the 855 I see there is 2.5GB free space.
The 2014.10 Garmin folder shows a total of 2.62GB used without the large JCV file which I am downloading as I write this.

--
Nuvi 855LMT and Nuvi 3790LMT

nuvi 855 updating

Melaqueman wrote:

Sorry to reopen an old thread.

After several frustrating tries using either Lifetime updater, Garmin Map Updater v3.1.14 and Garmin Express and none worked. Apparently my 855 now does not have sufficient room anymore. The 2014.10 is 2.4GB in size. I did a search on POI and found this thread.

Followed the directions to a point, the exception is/was that Garmin Express started automatically and downloaded to the SD card. I had created the Garmin folder on the SD card.

I have one question though. When the next update comes out, how do I download it? Will Garmins "whatever program" recognize that the map is installed on the SD card or will I have to do the same procedure again?

A BIG thanks to "alandb" for the comprehensive guide to install to SD.

Congrats, I've seen elsewhere that you were able to get 2014.10 installed to your 855.

But, for what it's worth, it is still possible to install all of North America to a nuvi 855 using the standard map updaters if you delete unneeded files like foreign language voice, help, text, traffic, etc. My 855 has the full North America 2014.10 installed internally to the 855, has a supplemental map installed as well, has the (disabled, but still taking up space) small JCV file that comes with 2014.10 and still has 611MB of free space! See the reply "In a nutshell (OK, a large nutshell)" in this link which specifically deals with our nuvi 855 models for instructions (keeping in mind that it was referring to a previous map update when I start mentioning file names, etc.):

http://www.poi-factory.com/node/34056

As pointed out in the above link, the best way to add the large JCV file is to install it manually to the SD card. But that's not any extra effort since the large JCV has to be manually installed wherever it goes. I think that as of this 2014.10 map update, the 855 will not have room for the large JCV file, so users wanting the large JCV will need to use a SD card.

But to repeat, the nuvi 855, after removing unneeded files like Swedish, Afrikaans, and other languages you don't speak, can have a map update install all of North America internally to the nuvi--and given the rate of growth of map update files, the 600+ MB of free space that remains on a nuvi 855 with all of North America using the new 2014.10 map, you can continue to do full map updates to the 855 internally for now and long into the future and not need to use the clone method to force a map to the 855's SD card.

855

Thanks for the post CraigW, but I already removed all the garbage such as the unnecessary languages, vehicles, Help files, MP3, Audio books years ago and
I just wish to go from point A to B that is what the GPS is for in my opinion.

If I want to listen to music, my car stereo is far better.

I have 2.5GB free on the 855 and the SD card has 2.62GB with the 2014.10 on it.

Thx again

--
Nuvi 855LMT and Nuvi 3790LMT

Thanks

Thanks...

Great Info

Great Info

If I read this thread

If I read this thread correctly, I can download maps via Garmin Express and select the map download to go to the microSD card direct and the only think I need to do is create a garmin folder on it?

Can I keep my poi's on the device or do they have to copied over to the card as well?

--
GARMIN nuvi2350LMT...

Not quite

redsfan wrote:

If I read this thread correctly, I can download maps via Garmin Express and select the map download to go to the microSD card direct and the only think I need to do is create a garmin folder on it?

Can I keep my poi's on the device or do they have to copied over to the card as well?

It's not quite that simple. According to Garmin's FAQ:

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

the automatic "map update to SD" option is only offered to certain nuvi models and even for them, the option is only offered when the updater determines that the largest map the device is entitled to receive will not fit internally to the nuvi. If the option is invoked, the folders needed on the SD card will be created by the update process so no extra work on your part is needed.

POIs can be kept on the nuvi if the map update is on the SD card.

guess my last reply didn't

guess my last reply didn't come through...thanks for the reply. I am using a 2350LMT so I should be fine. During last install I had the storage warning but all was fine in the end. I don't have a card here to test but with 400mb left I am sure I will need it..

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GARMIN nuvi2350LMT...

I finally had to clone

Greetings all,

As alandb has pointed out elsewhere, the new City Navigator 2014.40 map can not be installed with GarminMapUpdater for most users. I wish to report the results that alandb's clone method works fine with Garmin Express.

I also wish to report that the method, which requires the SD-stored cloned City Navigator map files to be renamed from gmapprom to gmapsupp, works even when the nuvi's internal storage has another gmapsupp file. On my nuvi 855, I can have two different Supplemental maps, both named gmapsupp, as long as one is in the nuvi and the other on the SD card.

alandb or others, I do have a few questions about the clone method since I've just tried the clone once as my initial clone:

1) In subsequent map updates (2015.10 being the next), do I need to again copy my GarminDevice.xml file from the nuvi to the SD card--or will the xml file from my past clone that's already on the SD card work for future updates?

2) When updating to 2015.10, for instance, the old 2014.40 map, manually renamed to gmapsupp, is still on the SD card. Should the current gmapsupp be deleted before updating to the new map? It seems that if the SD card is just a 4GB card, there may be insufficient room to install a new City Navigator while the old one is still there. In any event, the old map, gmapsupp, will have to be removed so that the new map update gmapprom can be renamed to gmapsupp, so the real question is whether it's better to delete the old map before or after the map update?

3) I did have an issue getting the clone method to work on my 855. The 855 has a gmapsupp map file (a special National Forest Use Map) and has City Nav. 2014.40 Lower 49 states on it as gmapprom. When doing the clone method leaving these two maps on the nuvi--and the cloned 2014.40 Full North America on the SD card, the nuvi would do a Map Loading loop and never complete the boot. To get the cloned map from the SD card to work, I had to disable the Lower 49 state map files on the nuvi. Is this expected? By disable, I mean rename the files to gmapsupp.img.disabled, not simply unchecking the map on the nuvi's Map Info page.

4) As a followup to #3, above, since I've now disabled the Lower 49 state map files on the nuvi. I plan to delete these gmapprom files to make more room on the nuvi for future map updates. Can anyone think of a reason NOT to do this?

Thanks all, and a special thanks to alandb for all his clone work.

cloning

CraigW, glad the cloning method worked for you.

1) Assuming there are no firmware updates, the old GarminDevice.xml will work for future map updates with the cloning method. However, if you leave the file on your SD, it can be confusing when POI Loader, Garmin Express and other Garmin software sees 2 occurances of your device. So I prefer to delete GarminDevice from the SD card after using the cloning method, then copy a fresh copy when the next map update comes out.

2) In my experience with cloning so far, Garmin MapUpdater was smart enough to delete the gmapsupp files even though it names the newly installed files gmapprom. I can't verify that Express does the same, but I suspect it does. I usually alternate between two SD card for map updates and usually start with a "clean" SD card. But I don't believe it is necessary to delete the old files if you want to use the same card.

3) I have no experience with this particular scenario, where you have multiple maps on the unit. One thing you might try is to name the new map gmapsup1.*.

4) Nope, I would go ahead and delete the old map files, although I would make a backup first ... just in case.

--
Alan - Nuvi 3597LMTHD, Oregon 550T, Nuvi 855, Nuvi 755T, Lowrance Endura Sierra

Thanks

alandb wrote:

CraigW, glad the cloning method worked for you.

1) Assuming there are no firmware updates, the old GarminDevice.xml will work for future map updates with the cloning method. However, if you leave the file on your SD, it can be confusing when POI Loader, Garmin Express and other Garmin software sees 2 occurances of your device. So I prefer to delete GarminDevice from the SD card after using the cloning method, then copy a fresh copy when the next map update comes out.

2) In my experience with cloning so far, Garmin MapUpdater was smart enough to delete the gmapsupp files even though it names the newly installed files gmapprom. I can't verify that Express does the same, but I suspect it does. I usually alternate between two SD card for map updates and usually start with a "clean" SD card. But I don't believe it is necessary to delete the old files if you want to use the same card.

3) I have no experience with this particular scenario, where you have multiple maps on the unit. One thing you might try is to name the new map gmapsup1.*.

4) Nope, I would go ahead and delete the old map files, although I would make a backup first ... just in case.

Ah, thank you. Your advice in #1 seems especially useful, so I've now disabled the xml file on the SD card so only the original nuvi-located xml file exists.

Your two SD card technique sounds safest, so when the next map update comes along, I'll probably buy another SD card and alternate as you suggest.

If you don't beat me to it, I'll try to remember to report back at the next map update if Garmin Express removes or leaves the previous gmapsupp files on the SD card.

I can't find quickly the thread on mapset naming, but I think my 855 is not a model that accepts gmapsup1 names. If someone (it was probably a DorkusNimrod finding) can find the thread, they can either confirm my thought or correct me. Since it's working for me now, I don't think I'll tinker with gmapsup1 names.

gmapsup1

CraigW wrote:

I can't find quickly the thread on mapset naming, but I think my 855 is not a model that accepts gmapsup1 names. If someone (it was probably a DorkusNimrod finding) can find the thread, they can either confirm my thought or correct me. Since it's working for me now, I don't think I'll tinker with gmapsup1 names.

I think you might be right CraigW. I can't remember trying it on the 855, but looking through the software release notes, I don't see any mention of expanded map naming.

--
Alan - Nuvi 3597LMTHD, Oregon 550T, Nuvi 855, Nuvi 755T, Lowrance Endura Sierra

Although

Although I didn't find it here, other forums show that the 1xxx Nuvi's were the first that accepted multiple names (names other than gmapsupp) on the SD card. Basically any model that uses the /Map folder to store additional mapsets will allow for file names like gmapsupp1, gmapsupp2, mymapsofohio, etc. Given that, your 855 only likes gmapsupp. wink

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Nuvi 350, 760, 1695LM, 3790LMT, 2460LMT, 3597LMTHD and TomTom XXL540s

Map naming

That is true t923347, but on some older models like the 7x0, 2x5, 7x5, Garmin added support for a second supplemental map file (named gmapsup1) via a software update. However, I think CraigW is right that the 8xx models never got that update.

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Alan - Nuvi 3597LMTHD, Oregon 550T, Nuvi 855, Nuvi 755T, Lowrance Endura Sierra

Success

Just done his procedure on a BMW Navigator IV, and after weeks of frustration at not being able to get the european full coverage map on, this has sorted it. Eternally grateful.

Welcome.

Welcome to POI Factory ringo_300. Glad the cloning procedure worked for you.

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Alan - Nuvi 3597LMTHD, Oregon 550T, Nuvi 855, Nuvi 755T, Lowrance Endura Sierra

.

I tried doing this on my 350 (link bellow)all went fine but when i put SD card in it starts up shows maps loaded then shuts off,i restart it and same thing loads then black screen/shuts off.

any idea???

http://www.poi-factory.com/node/39231

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Garmin nuvi 350 Lifetime Map Updates NT 2014.40 -- Garmin c320 NT 2010.10

Full NA?

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.

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Alan - Nuvi 3597LMTHD, Oregon 550T, Nuvi 855, Nuvi 755T, Lowrance Endura Sierra
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