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On Garmin navigators, models nuvi 55/56/65/66/25x9/26x9, zumo 590, GPSMAP 64, Edge 1000 etc. a different protection method is used, the functionality of unlocked maps from a distribution depends on the version of the firmware installed in the device, in most cases it will be necessary to patch it so that the navigator can use unlocked maps from a given distribution, otherwise it will display the error “Cannot Authenticate Maps”

Navigators of the Drive, DriveSmart 52,55,65,66,71,76,86, Zumo XT, Alpha 200i, Montana 700 models cannot currently be patched , because their firmware is encrypted.

The program and instructions (English) for patching firmware can be downloaded here or a topic on the forum (Russian).

Materials on the correct installation of files from the distribution into the navigator can be found at links [1] , [2] and [3] .

To determine which paths, map files and additional files from the "Additional Files" folder your device supports, you need to open the garmindevice.xml file in the Garmin folder, in the internal memory of the device, and press CTRL-F and look for the lines below. If the line is in your file, then the device supports the path\function.

 

 

earch strings inside the garmindevice.xml file

Main map paths

Code:

<DataType>

<Name>PreProgrammedMaps</Name>

<File>

<Specification>

<Identifier>IMG</Identifier>

</Specification>

<Location>

<Path>.System</Path> <- Internal Path

<BaseName>gmapprom</BaseName> <- Map Name

<FileExtension>img</FileExtension> <- Extension of Map

<Extensions>

<dtlx:DataTypeLocationExtension>

<dtlx:ExternalPath>Garmin/</dtlx:ExternalPath> <- External Path (microSD)

</dtlx:DataTypeLocationExtension>

</Extensions>

</Location>

<TransferDirection>InputOutput</TransferDirection>

</File>

</DataType>

Additional map paths

Code:

<DataType>

<Name>SupplementalMaps</Name>

<File>

<Specification>

<Identifier>IMG</Identifier>

</Specification>

<Location>

<Path>Map</Path>

<BaseName>gmapsupp</BaseName>

<FileExtension>img</FileExtension>

<Extensions>

<dtlx:DataTypeLocationExtension>

<dtlx:ExternalPath>Garmin/</dtlx:ExternalPath>

</dtlx:DataTypeLocationExtension>

</Extensions>

</Location>

<TransferDirection>InputOutput</TransferDirection>

</File>

</DataType>

Junction View (JCV)

Code:

<DataType>

<Name>PreProgrammedLaneAssistPortraitFull</Name> <- Name/Type of File

<File>

<Specification>

<Identifier>JCV</Identifier>

</Specification>

<Location>

<Path>.System/JCV</Path> <- Internal Path

<FileExtension>jcv</FileExtension>

<Extensions>

<dtlx:DataTypeLocationExtension>

<dtlx:ExternalPath>Garmin/JCV/</dtlx:ExternalPath> <- External Path (microSD)

</dtlx:DataTypeLocationExtension>

</Extensions>

</Location>

<TransferDirection>InputOutput</TransferDirection>

</File>

</DataType>

Checking Unicode map support

Code:

<DataType>

<Name>UnicodeMaps</Name>

<File>

<Specification>

<Identifier>IMG</Identifier>

</Specification>

Checking support for the 3DBuilding Map function (gmap3d file)

Code:

<Path>.System</Path>

<FileName>gmap3d.img</FileName>

</UpdateFile>

Support for SID files (additional functions Address Point, Address Search, Foursquare Map, InstaSearch, Parkopedia, ASR, etc.)

Code:

<DataType>

<Name>InstaSearch</Name>

<File>

<Specification>

<Identifier>INSTASEARCH</Identifier>

</Specification>

<Location>

<Path>.System/SID</Path>

<FileExtension>sid</FileExtension>

</Location>

<TransferDirection>InputOutput</TransferDirection>

</File>

</DataType>

...

<DataType>

<Name>CountryStateSearch</Name>

<File>

<Specification>

<Identifier>CBX</Identifier>

</Specification>

<Location>

<Path>.System/SQLite</Path>

<FileExtension>db</FileExtension>

</Location>

<TransferDirection>InputOutput</TransferDirection>

</File>

</DataType>