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How To Get Your SD Card ID in Your Garmin Device
How to get SD card ID:
- Insert the SD card into your Garmin.
- Boot your Garmin And touch the Clock or battery (upper right) for about 10 seconds.
- A secret menu will show up.
- Click (Next) until you see the menu for the SD card.
- Press (Checksum) and wait unit ID for SD card will appear (10 digits for my sandisk SD card)
or simply go here:
You must have Garmin Communicator Plugin installedCode:Please Login or Register to see the links
In the desired SD card create a directory Garmin and copy in it any file gmapsupp.img with some real .unl .
This is for bluecharts update, it needs an .img and an.unl
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15th January 2010, 10:33 PM #1Important User
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How To Get Your SD Card ID in Your Garmin Device
Last edited by catymag; 23rd September 2010 at 10:24 PM.
You have to navigate to get to the good.
Galaxy S5 Kitkat 4.4.2 / Nuvi1200->1250 / Nuvi3790T->34xx / Nuvi 2200 / Nuvi 66 / Oregon 600
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19th January 2010, 05:18 PM #2Member
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I tried this with a Nuvi 755T and it does not work!
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10th February 2010, 07:26 PM #3Member
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It's not the (Checksum) number you need it's the 10 digit code. Second picture where it say serial 2691044652 that’s the number you need, obviously your SD card Serial number will be different
Also in some models you need to hold down the battery icon not the clock
Hope that helps
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16th April 2010, 09:15 PM #4Member +
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Weird, I only got a 6 digit code under serial, on a Nuvi 310
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17th April 2010, 12:52 PM #5Junior Member
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Try your Garmin Power Button and touch the upper left for about 10-20 seconds.
On Nuvi 660 perfect!
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10th April 2015, 12:43 AM #6Master
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On any of the 7xx series here's what you do.
Originally Posted by fpz
1. boot it up and hold your finger on the battery icon for 5-10 secs and it will flip to the maint mode screens
2. on the lower right corner of the screen hit the NEXT button and you'll cycle to the "Data Card Test Page"
3. your SD card serial number will be spelled out clearly indicated on the upper left of the screen
If you have booted in the car or a home charger (external power) the battery Icon will not appear. No problem, to get to the maint screens....
1. go to the "where to" screen
2. hold the screen just to the left of the clock (where the battery icon would normally be) for 5-10 sec and it will flip to the maint mode screens. If you're sloppy about where you press, you'll flip to either the to the Map or Clock screens, depending on where you fat fingered it.
It all works fine... I do it all the time on a 755T and others.
FYI - not a SD cards have a 10 digit serial number. I've used a few with less digits (as seen by the Nuvi). I've never seen more than 10 digits. Originally Posted by Burn666
I think the number of digits depends on the manufacturer. Less numbers i more frequent in Micro-SD cards.
FYI - Not weird at all Originally Posted by EIcojo
6 digits is OK if that's what the Nuvi data card screen says. Some cards have a shorter number. Some folks assume it 10 digits because
most of SD serial are actually 10 digits and the expectation is that it's 10 digits because every Nuvi (I've ever seen) has a 10 digit SN (unit ID).
This may sound silly but a "sure" way to find it is put it in someone else Nuvi and check it. Originally Posted by dolan19
I've never seen a reliable alternative method.
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25th April 2010, 02:04 PM #7dolan19Guest
Does anyone know how to obtain SD Card Id with a Garmin GPSMap 521 (no touch screen)?
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5th July 2010, 10:47 AM #8Junior Member
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Bump: Anybody knows? Originally Posted by dolan19
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5th July 2012, 10:33 AM #9platonikusGuest
Why is this number so important?
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5th July 2012, 02:24 PM #10Master
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This number may or may not be important depending on what you are trying to do. Thes days, it's relatively unimportant for most folks. Originally Posted by platonikus
This number (the SD serial number) is necessary only if you have a situation where you are trying to generate and Unlock key for a map saved on a specifc SD Card and you would like to use that particular SD in mltiple GPS units.
In a keygen (generating an unlock key), using that SD card S/N associtaes the MAP, the Unlock Key/code, and SD as a "set" so the map is now unlocked "only" on that SD and you can then use the SD and Map in any GPS you like.
If on the other hand you were put a map on SD and create and Unlock Key using your GPS Unit ID (as opposed to the SD card ID), the map would only be unlocked when the SD containing the map was used with the GPS for which it has been unlocked.
Although are still a few reasons for wanting to still use an .UNL file containing a key, these days, it's generally much easier to simply use an unlockable IMG files as they work almost all cases with all devices.Last edited by tiger555; 5th July 2012 at 02:29 PM.
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