Thread: Garmin Devices, their related HWID numbers and Software update Pages links Table

I have received a friend's nuvi with no label on the chassis (=no model number) and on the first page with the GARMIN LOGO it says: nuvi37xx (the known problem which I will try to fix later). There is a BlueTooth logo printed on the chassis, so I suspect it is a nuvi 3790.

Trying to find the nuvi's HWID I searched (according to your instructions) for "<PartNumber>006-xxxxx-xx</PartNumber>" in the file: nuvi\Garmin\GarminDevice.xml and I found 2 different lines (each appearing twice in the file):
<PartNumber>006-B0482-01</PartNumber>
<PartNumber>006-B0901-00</PartNumber>

The first line says the HWID is 0482 and
The 2nd line says the HWID is 0901
In the list of HWIDs in post 1, I can find NEITHER HWID=0482 NOR HWID=0901

Any explanation/suggestion???

Originally Posted by georgev

Trying to find the nuvi's HWID I searched (according to your instructions) for "<PartNumber>006-xxxxx-xx</PartNumber>" in the file: nuvi\Garmin\GarminDevice.xml and I found 2 different lines (each appearing twice in the file):
<PartNumber>006-B0482-01</PartNumber>
<PartNumber>006-B0901-00</PartNumber>

You must search for <Model> and immidiately after <PartNumber>006-xxxxx-xx</PartNumber>!

If you search for <PartNumber>006-xxxxx-xx</PartNumber> in whole file you must find a pair of dozen result. Voices, icons, text, help and etc including finally:
006-B0482-01 - GTMXX,SYS+BB
006-B0901-00 - TMC Rcvr,3G,SYS+BB

My advise to open file in text viewer an read it from left to right. You see all that you need yourself.

Thanks Giomen! I found it!

Now I have another problem:
I want to back up (all) the files of a nuvi 3490 but I cannot see the hidden/system files. I have enabled them in the File manager of Win7 (and I have used Total Commander (another file manager) with hidden/system files enabled but I have the same problem.

I have noticed that the nuvi is shown as a "portable device" which contains "Internal Storage" (i.e. nuvi's internal memory) and "memory Card" (i.e. the microSD card). In the "Internal Memory" I cannot see the hidden/system files. I tried with an older garmin USB driver v3.2 & 2.3.1.1 but I get the same problem.

Any good idea or trick?

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SOLVED
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I found that I need to switch to MTP mode:
Press Upper-Right corner of the volume screen to enter diagnostics Page and then select:
MTP Settings > Mass Storage (instead of default MTP Auto Detect)

The device should be in Mass storage mode in order to see \.System
[Only registered and activated users can see links. ]
Sorry - I did not saw georgev solved the problem...
Please delete my post.

You can make it even easier: we save the GarminDevice.xml file from the memory of our navigator and, therefore, there is no need to edit the xml file.

Does anyone have any previous firmware versions for the Garmin Pro 550 plus, HWID: 3116 that they could please share?