84 System Diagnostic Page

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At your own risk


Various system settings can be viewed and altered from a menu which is available from the display shown opposite. Get to this screen by clicking on the speed indicator on the map screen in the bottom left corner.

Then press on the circled area on this display and hold it for 10 seconds.


Make the .System folder Visible


After 10 seconds of pressing the circular speedo, a new menu will pop up. The most commonly used feature of this menu is the MTP settings which allows you to see the Zumo and Memory card as drive letters. The need to do this in order to access the hidden system folder has now gone - but the option to show the .System folder is now included in the menu.


MTP or Mass Transfer Mode


MTP (Media Transfer Protocol) is to be preferred. No drive letter is assigned to the Zumo Internal Memory or the SD Card. This protocol does not require the device to be formally ‘ejected’ once it has finished writing. The cable can be unplugged without risk of damage to the device or to the files. The downside is that files cannot be opened or edited when accessed by a USB connection. If you want to read or modify the files with a program (say), then you have to copy them to another device (eg a computer), and then if necessary save them back.


Remove Links to Garmin Explore


If you get fed up of your Zumo always synchronising your Routes, Waypoints and Tracks with the Garmin Explore Website, and want to return control to the Zumo itself, Garmin does not make it easy or obvious.


But the option is there in the diagnostic pages from the 10 second speedo menu. Seek out ‘Developer Tests & Tools, and select ‘Reset Explore Database’. (both are next to the bottom of the menus). Nothing seems to happen, but that does the trick.


However - it is important to turn off the XT completely - a 'Hard Power Down' immediately after selecting 'Reset Explore Database'. If you do not do this, then the XT may have time to re-connect and restore the connection.


You can tell if you Zumo is connected to the Explore website. Select Where To? -> Explore. If you get a screen telling you how to set it up, then it isn’t set up. Once it has been set up and then removed as described above, setting it up a second time usually requires no additional settings to be selected - it remembers them from last time.


There have been reports that if the phone is an Apple then the above method does not work, and that you have to first break all connections between the phone and the XT - ie break the bluetooth connection. We have learned that if Garmin Explore is set up when Garmin Drive is first installed ont he Smartphone, then this issue may appear. I never have clicked the link on the smart phone to link to Explore, and I have never had this problem. However, if you do have this problem, then removing Garmin Drive and re-installing it without clicking on the link seems to ensure that the the above steps work. I do not know whether this removes any functionality with the Explore Apps. Not that I have found.


Erase User Data ... (and restore settings to factory default values)


There are a number of ways to do this. The first method is 'hidden'. Whether or not the others do excactly the same, I do not know.


  • Cold Power off. Power on - wait for first copyright screen (after Garmin screens). Hold lower right for 10 seconds. Erase User Data dialog box is displayed.

  • Settings->Device->Reset->Reset Settings (or Delete Data and Reset Settings).
  • Settings ->3 Bar Menu -> Restore (to restore all settings to their default values)
  • View Map->Speed Button->Speed Circle (hold for 10 seconds until screen changes)->Clear all User Data
I don't think that any of these methods affect the installed map.

Test Pages


Power on after a Cold Power Off, let the Zumo start up.


Hold battery icon, top right, for 5-10 seconds. Opens a screen of test pages. Buttons are (not) labelled - but should be ‘Exit’, ‘Back’ & ‘Next’ if 3 buttons are shown, or ‘Back’ and ‘Next’ if just two buttons appear.


Screen with multi-coloured rectangles can be escaped by tapping 4 corners ending with bottom right corner.




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The information on these pages has been acquired from personal experience of using and testing the behaviour of Basecamp and my Zumo XT. I have no links with Garmin, and these pages should not be regarded as instructions. They are presented for interest only. The contents of these pages must not be shared, copied, transmitted, redistributed or re-published in any form without my permission. (C) JHeath 2021.