Why a copied . mct activated sd-card is not working in your Carminat device.

Start study the datasheet of a sd-card and you will find out that there are
6 registers located on the sd-card in a protected area.
One register is the CID = Card identification register (128-bit)
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The referred register area is about 1% in size of the sd-card and is filled with data during
the last check and formatting on the 'factory floor'.
Untill today all vendors of sd-cards have not made public how to reach and change this data.
Even a bit to bit image is missing this data !!
The CID contains specific vendor information o.a.
MDT: Manufacturing date (12-bit, Month, Year)
and other 5 unique fabrication data.
For navigation sd-cards, most important is the:
PSN = Product Serial Number (32-bit, Uniquely assigned integer)
Here an example:
Raw CID Bytes: 94-00-73-A2-7D-7D-10-30-30-30-30-30-4D-53-1B-00
Product Serial Number: 7d7da273 = 2105385587 (10 digit in decimal)
TomTom, but also Garmin use this number to make a sd-card unique.
The navigation software reads and checks this number in combination with the device unique ID
TomTom writes this number, encrypted, as the SDcardSerial in the ttgo.bif file
for TomTom's Carminat devices.

For this reason, the unique PSN=Product Serial Number, you can copy a TomTom supplied Carminat sd-card
without error notification, on another sd-card.
But the copied sd-card will never work on your Carminat, due to the 'genuine' missing PSN-number

CID read programms you can find with Google:
ReadCID.zip This a 'read CID only' program.
The ReadCID.exe application will only work if the memory card reader is attached
directly to the PCI bus of your laptop. No USB type of memory card reader will have the capability to
access the CID parameters through the USB API.

Another PSN reader for WinCE or Windows Mobile devices:
Card_ID.exe

4Wheel Reviewed by 4Wheel on 5th January 2013. Cracking the non-Live Carminat ---------------------------------------------------------------------------------------------------- Opening statement by biggerdave There is NO (current) way to manipulate/crack/patch/copy/clone or otherwise modify these Carminat Live devices to use downloaded maps so PLEASE don't ask BUT feel free to contribute here. However, see further information/details within this thread about Cracking/Patching/Copying the Caminat "non-Live" version From the guru downunder35: Suffice to say that Rating: 5

Hey guys,

Yes I confirm that all Carminat Live use 4E0D-F1F7 as the volume ID of the SD card.

If someone is interested for test I have an old map (France 855.2938) with .MCT

I can upload it if you wish.

++

Hi All,

i have carminat 8842 here in south africa that I would like to update/crack the map, do you have any tutorial or step by step to do it? and what map can i use for southern africa?

thanks

Breakthrough:

One way to define it non recursively is to list the elements of L after each rule has been applied.

Any other possible ways? Please feel free to help.

Here is the map France 855.2938 with .MCT

Attachment 14378

Attachment 14377

++

A new version for Carminat Live, it is important not update by Home to see whether there is any way to patch the navcore

For researchers leave here the navcore

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regards

Hi!
My cousin bought a 2012 Renault Megane that has Carminat TomTom...
It has DE_AT_CH map installed but he wanted to install Iberia (or Western Europe)... Does anyone have this MCT to share?
I can provide DE_AT_CH-204.meta.mct if anyone needs it...

Thanks in advance...

From (and credit to) downunder:

For everyone still running the 9.844 or that simply want to try:

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I don't know if the install of a Carminat NC still works if the 9.845 is already installed, but I don't expect too much anyway.
Did use different tools and methods to extract the file that corresponds to the PNDNavigator on normal TT's but I think the Hash-test won't allow the installation.
Updated a SD backup that was provided and used the ttsystem files that was created on the SD - so I did what I could to get the correct files and to make sure it fits together.
Keep in mind that you need to extract several images to get to the file.
Just getting the stuff sorted using Windows is a pain and without a device to test pretty much useless trails anyway
To get the thing on your Carminat:
Download the archive and unpack the ttsystem to the root of your Carminat SD - not the original SD, a backup!!

I don't know what changed in the filesystem but I do know that a 9.844 SD can be copied with no problems at all.
Just the fact that the map on such a SD won't work still stands.
But I had two SD backups from a CL now and no map data was included, only the user stuff like mapsettings.cfg and the speedcams - no actual map, as I think the map is only the internal memory after installation.

password: downunder

A new version 9.846 for Carminat Live, it is important not update by Home to see whether there is any way to patch the navcore

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For researchers leave here the navcore

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regards