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Registering your GPS maps MicroSD

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Technical guide – Backroad Map Books

Here's1. aWhy fewRegister benefitsYour you get from Registering:MicroSD?


    - Download ComputerFeature MapsDescription for Mac or PC -Computer‑based Storemap adownloads secure copy of your Garmin License and Unlock Files - Access to Futurethe Updateslatest atComputer a Discount - Additional Technical Support  Updates are FREEMaps for 60macOS days& afterWindows. registration of Secure license storage Keeps your microSDgmapsupp.unl cardand gmapsupp.gma files safe in your account. Discounted updates Receive future map releases at a reduced price. Priority technical support Faster response for any Garmin‑map‑related issue.

    Free Updates – After registration you can download map updates for 60 days at no charge.
    If you purchasebought an older version from a retailerretailer, you canmay updateupgrade to the latest versionmap ofrelease thewithin mapsthat for60‑day 60 days after registration.    window.

    UsedImportant:
    • A card that has already been registered cannot be registered again.
    • If your card is “used” or already updatedupdated, cardsthe registration will not be able to be registered.
    fail.

    Registration

    2. Prerequisites

    Step Action Notes 1 WeInsert recommendthe thatMicroSD youcard insert• If your SDcomputer card directly into the SD card slot on your computer, if available.

    If you don't havehas an SD SD‑card slot, you'll have to insert the microSDcard directly.
    • If not, plug the card into your Garmin GPS unit and then connect the GPS unit to your computer via aUSB.

    USB cable.

    1.

    2 GoLog in to theBackroad ourMap websiteBooks atURL: Backroadmapbookshttps://backroadmapbooks.com/account/login

    Log
    Create into your account on our website, create a newan account if you don'tdo not already have one.

    2024-11-26 16_20_05-Account – Backroad Maps - Opera.png

    2. Click3 onLocate the "MYlicense GPSfiles Maps"The buttonrequired tofiles go(gmapsupp.unl toand the registration page.

    2024-11-26 16_20_45-Account – Backroad Maps - Opera.png

    3.gmapsupp.gma) Click on the Register button for SD

    Reg.png

    4.) Use the Choose File buttons to select your gmapsupp.unlare in the first field and gmapsupp.gmaGarmin in the bottom field.

    *These files can be found in the Garmin folder on your card.MicroSD.

    3. Registration Workflow

    All steps are performed on the My GPS Maps registration page.

    3.1 Navigate to the Registration Page

      After login, click the “MY GPS MAPS” button (top‑right).

      On the resulting page, select “Register SD”.

      upload.pngRegistration Button

      3.2 Upload the Unlock Code & Map File

      Field File How to select Unlock Code (gmapsupp.unl) gmapsupp.unl Use the Choose File button to pick this file from the Garmin folder. Map File (gmapsupp.gma) gmapsupp.gma Use the Choose File button for the second field.

      5.)Tip:
      Double‑check Whenthat yourthe files you pick are loaded intoexactly the registration.unl formand you.gma canfiles nowfrom the Garmin folder. Any mismatch will trigger an error.

      3.3 Submit

        Once both files appear in the form, click SUBMIT.SUBMIT.

        IfA yourgreen registrationconfirmation is successful youbox will see a green boxappear, and your newproduct productwill be listed forunder you.“My Products”.

        regsuccess.pngSuccess Message

        Result: The MicroSD card is now registered to your Backroad Map Books account.

        4. Post‑Registration

          Access the “Computer Maps” – Log in, go to “My Products” and download the latest PC‑compatible maps. Update within 60 days – Download updates for free. Backup your files – Although the unlock codes are stored in the cloud, keep local copies of the .unl and .gma files on your computer for future reference.

          product.png

          Your

          SD

          4. cardCommon has now been registered.

          Error Messages

          & Fixes

          Error Cause Remedy “No ESN data found with unlockCodeunlockCode” -ESN (Electronic Serial Number) missing or corrupted. Contact Backroad Map Books support

          (email: [email protected]).

          “Invalid File UploadedUploaded” - Wrong file type chosen during(e.g., selectiona .zip instead of .gma or .unl). Re‑select the exact .gma and .unl files from the Garmin folder. “This card has already been registered” Card was previously registered on another account or already updated. Not recoverable – you must purchase a new card or contact support for advice.

          5. Troubleshooting Checklist

            File Size & Permissions – Ensure files are not truncated and are readable by your OS. File Path – Some browsers strip the path; only the file name is needed. Browser Compatibility – Chrome, Firefox, Edge, Safari (latest versions). Network – A stable internet connection is required for the POST request. Card Health – If the card shows errors in Windows Disk Management, consider formatting and re‑inserting.

            6. Quick Reference

            Action Shortcut Log in Ctrl+L (Chrome) Open registration MY GPS MAPS → Register SD File picker gmapsupp.unl → Choose File; gmapsupp.gma → Choose File Submit SUBMIT button

            Prepared by the Backroad Map Books Technical Support Team


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