Question about Garmin zumo 550 GPS Receiver

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Hi I have a Garmin Zumo 660 and it keeps saying "External power lost" I started when I renewed the maps and up loaded the latest software I have updated the software twice since but it still keeps telling external power lost it says it when it recalculates or if it is switched on or off, The external power is fine by the way. Dave Cox

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Hold down on and + button together for a while, that will reset all.

Posted on Mar 21, 2011


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Posted on Jan 02, 2017


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I unplugged cable to computer during first update This is a garmin zumo 340

Try doing a Hard Reset

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    May 11, 2016 | GPS

    1 Answer

    When I turn my Garmin 550 on it says loading maps, then goes to the select a local: It's frozen their on United States i push OK and nothing happens can not change the Locale it's frozen I tried...

    Hi tkfranks331,

    Press the power key and hold it if the screen of your Zumo is frozen. Keep holding the power key while pressing the key that has a plus symbol ("+") on it. This will reset your device and unfreeze the screen. You can also try calibrating the screen by pressing the power key for one full minute.

    If this does not work, please follow these steps.

    1. Update the internal disk software. Download and install WebUpdater on the computer. Please visit this link to download the WebUpdater.

    2. Open WebUpdater on the computer.

    3. Connect the Zumo 550 to the computer with its USB cable.

    4. WebUpdater will automatically search for updates.

    5. Follow the prompts to download any pertinent updates for the Zumo 550.

    Hope it helps.

    Thank you for using FixYa.

    Aug 17, 2011 | Garmin zumo 550 GPS Receiver

    1 Answer

    Having problems in unlocking maps on a Zumo 660

    You can get details of how to unlock your maps at
    There's more information there than you need so you can start at paragraph 2

    Apr 29, 2011 | Garmin zumo 660 GPS Receiver

    1 Answer

    Gps has lost its maps, screen says can't unlock maps

    There several reasons you may receive the message Can't Unlock Maps on your nuvi or zumo device.
    • Can you press OK and get to the Where To/View map screen?
    • Did you load maps to the unit using the MapSource or MapInstall program?
    • Did you load maps to an SD data card?

    If one of the points above applies to you, please follow the steps below to clear the Can't Unlock Maps message:
    1. Remove SD card from unit, if applicable.
    2. Plug the unit into your computer with a compatible USB cable.
    3. Open MyComputer/Computer icon. (Mac users skip this step.)
    4. Right-Click on the Garmin drive and select Open. (Mac users can locate the Garmin drive mounted on the Desktop.)
    5. Open the Garmin folder.1
    6. Locate a file named gmapsupp.img
    7. Right-Click and delete file named gmapsupp.img
    8. Safely disconnect your unit from your computer to see if the Can't Unlock Maps message is gone.

    1. Nuvi 1100/1200/1300/1400/1600/3700 and Zumo 665 users will open the Map folder instead.

    *If the gmapsupp.img file does not appear in the Garmin folder, please create an unlock file for device.

    Nov 28, 2010 | Garmin Nuvi 265W GPS Receiver

    3 Answers

    I just bought a HD Garmin Zumo 660. I trying to connect and unlock the maps. I found the serial number, but can't find the product key/coupon code. Any suggestions on where to look?

    The Product Key for your map update download can be found in your myGarmin account.
    To view the Product Key:
    1. Log in to myGarmin
    2. Click on myMaps
    3. Click on Map Downloads
    Your product key should be located on this page.

    Oct 23, 2010 | Garmin Nuvi 660 GPS Receiver

    1 Answer

    I have a garmin nuvi 660 it says "the screen is currently locked. press the power key to unlock." I have done this several times and even loaded up the latest software. I still get this message. When...

    The on / off switch on top has 3 positions, it locks all the way right, when the unit is on make sure you have it in the middle.

    There are icons near power button that indicate right side lock.

    Oct 10, 2010 | Garmin Nuvi 660 GPS Receiver

    1 Answer

    Downloading songs from an i-mac computer to a garmin zumo 660

    I don't know for sure, but most likely the problem is that iTunes keeps songs in AAC format, and the Garmin wants them in MP3 format.

    If that's the case, then what you need to do is this:

    in iTunes, build a playlist of the songs you want to export.
    Click on that playlist to show the list of songs
    Click on the first song in the list, then hold SHIFT and click on the last song in the list so they're all highlighted.
    Select the menu option "Make and MP3 copy". Apple keeps moving this option, so you may have to hunt for it, depending on the version of iTunes you have.

    This should leave the nice-quality AAC versions alone, but also make MP3 copies of each song.
    Copy the MP3 files to the SD card and try that in your Garmin.

    Jun 06, 2010 | Garmin zumo 660 GPS Receiver

    1 Answer

    Danish manual for a Garmin zumo 660 GPS?

    Pls come back and rate our answer.

    Mar 15, 2010 | Garmin zumo 660 GPS Receiver

    1 Answer

    How to install map to garmin nuvi 205w

    Normal 0 false false false MicrosoftInternetExplorer4 /* Style Definitions */ table.MsoNormalTable {mso-style-name:"Table Normal"; mso-tstyle-rowband-size:0; mso-tstyle-colband-size:0; mso-style-noshow:yes; mso-style-parent:""; mso-padding-alt:0in 5.4pt 0in 5.4pt; mso-para-margin:0in; mso-para-margin-bottom:.0001pt; mso-pagination:widow-orphan; font-size:10.0pt; font-family:"Times New Roman"; mso-ansi-language:#0400; mso-fareast-language:#0400; mso-bidi-language:#0400;} Just so you know:
    Sorry, no free maps. I know I've tried. You either live with the old map or buy the latest version.
    I bought the life time maps updates and I'm glad I did.
    I've updated my maps at least 6 times.
    New maps are about $70.
    Life time maps are about $99 (when I bought mine)
    BUT FIRST make SURE you have the latest software in YOUR computer and in YOUR Garmin before you load any maps.
    You can get that FREE at Garmin here:

    Normal 0 false false false MicrosoftInternetExplorer4 To download the latest unit software visit Garmin website:
    After installing WebUpdater once from the Garmin website, perform all future software updates from your computer. Simply connect your compatible Garmin device to your computer, then run WebUpdater from your computer's "Start Menu" by selecting "Start", "Programs", "Garmin", and finally "WebUpdater"
    REMEMBER: It takes hours to do a complete a map update.
    Unless you bought the Lifetime maps you may have to pay for current maps.

    Does this help? Let us know. Thanks.

    Dec 12, 2009 | Garmin Nuvi 660 GPS Receiver

    1 Answer

    Lines Running North and South

    How do you load maps? and are these Garmin maps. I try to keep the Zumo original and use an SD card for extra maps. Did you try this yet? And if you are using SD cards, try a different brand/quality. I had some lockups with crappy budget cards. Kingston, Sandisk and some other A brands work fine!

    Oct 16, 2007 | Garmin zumo 550 GPS Receiver

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