Thread: Enable features in your nuvi 12xx, 13xx and 14xx - JCV, LA, TTS

Originally Posted by Giomen

It is not so! It is depend of Logo in unit. Some of 1350T have full features and it is generally depended of market where it was sold...

By that logic I should be getting JCV files downloaded whenever I update my 1300. I can definitely tell you this is NOT the case. I have to download the large JCV Garmin has available, every time I update the map.

What version of logo do you mean in your 1300 case? What is map about?

Garmin Software and Servers check only Garmindevice.xml and nothing else.
Open this file in a text editor to see all the info inside.

Originally Posted by tli

I believe Giomen may be correct in that the logo.bin is the determining factor when a GE LM update occurs?

I had mentioned that factory preloaded logo for one model could be different! And that logo is mother for Garmindevice.xml contents as you can see in examples above

I think you are misunderstanding what both Giomen and dasilvarsa are saying. I guess a picture is worth a thousand words, and two are even better.

Portion of a US 1300 GarminDevice.xml prior to modding logo [original splash D1340-00]:

Spoiler: pic

After modding [splash now D1340-50]:

Spoiler: pic

Nothing is read by Garmin sw or it's servers other than the device's GarminDevice.xml as clearly stated by dasilvarsa. The device itself writes to the .xml files on each boot cycle to update it from it's own internal information. In the above case the later xml refects the splash of 1340-50 as would yours. The logo bin [16.bin] itself is not directly accessed by GE or WU etc. Even full firmware is only known by the software version written in the xml file, e.g.:
<Model><PartNumber>006-B0972-00</PartNumber><SoftwareVersion>620</SoftwareVersion><Description>nüvi 1300</Description></Model>

You can also open the xml in a web browser to more clearly see the info. The above images are from IE.

NOTE: If you want to prove this to yourself, put the GarminDevice.xml in a Garmin folder on a usb stick, change the software version in the xml with WordPad or any other text editor to one version below the current [eg. change 620 to 610], open WebUpdater and it will be recognised as a Garmin device ['nuvi 1350 is connected'] and then will dl the current V6.20 as GUPDATE.GCD to a .System folder on the stick. Proof positive that the Garmin software does not access anything other than the xml file.

I think i see the problem Strephon and Giomen. Maybe you're talking about two different things? This is my understanding of how Garmin update software works:

From this info in the GarminDevice.xml:

<Model><PartNumber>006-B0972-00</PartNumber><SoftwareVersion>620</SoftwareVersion><Description>nüvi 1300</Description></Model>Id< ... etc, etc.

WebUpdater reads only the Model-Description, i.e. the HWID 0972, and the FW Version determines which FW and Voice, Text etc files to offer for the unit.

MapUpdater however reads the Model name [1300, 1350, 1390 etc] and UID etc i.e. this "<Id>xxxxxxxxxx</Id><RegistrationCode>xxxxxxx</RegistrationCode><Unlock><Code>xxxxxxxxxxxxxxxxxxxxxxxxx</Code></Unlock><Unlock><Code>xxxxxxxxxxxxxxxxxxxxxxxxx</Code></Unlock>" to determine if there's entitlement to a map update and which additional files to dl with the map [JCV, ASR etc].

I suppose GarminExpress looks at all those parts seeing as it handles both fw and map updates.

What are others' thoughts on this?

Yes. But it does read the Model Name description because it will show nuvi1300 (Unit ID xxxxxxxxxx). i.e.:

Spoiler: pic

Now edit the GarminDevice.xml Model Description to 1350, and voila:

Spoiler: pic

That doesn't mean it takes it into account any further of course, and as you said it's only the HWID which identifies the unit and determines the appropriate FW, and the current version which then determines if an update is needed [which is what i also said].

PS: I had 'WebUpdater reads only the Model-Description, ... etc', i meant 'WebUpdater only reads the Model-Description, ...'. Sorry.