Thread: Find CARDID in Garmin MXT 5.00.30 ASN WINCE6 --Another solution

Originally Posted by mach0628

I download Garmin MXT 5.00.30 ASN ,run on my WinCE6.0 PNA ,but it can not get card id , i try some ids, for example 1111111111,0000000000, not work. so , i used ida to parse it. it used sub_10F0D8 to get CARDID ,stored into an int var. I saw it's code for a whole day, realize sub_10F0D8 used sub_10EAB4 to get card name , store in FileName, check it is not empty or "\Garmin\" , then add "\Vol:", used it for CreateFile and DeviceIoControl to get card id.Unfortunately, such name can not get any in my PNA. I write progarm can check this on you PNA , it work for wince6 ,perhaps not run on wince5 You can download it [Only registered and activated users can see links. ] here.
so fix
.text:0010F130 BL wcscat to BL wcscpy
and fix
.rdata:003ACCBC 5C 00 56 00+s_Vol unicode 0, <\Vol:>,0
to
.rdata:003ACCBC 5C 00 56 00+s_Vol unicode 0, <DSK2:>,0

you can see card id under device id on garmin about.
And then , i move garmin into NANDFLASH, it also work
Detail Fix as follow
1. use sdcard to confirm "DISK2:" can get card id on you PNA
2. on 0x00FE530 , change four byte in red rectangle to 3A 57 08 EB
[Only registered and activated users can see links. ]
3. on 0x39BCBC, fix to 44 00 53 00 4B 00 32 00 , and if your PNA can get card id at "DSK3:" , fix to 44 00 53 00 4B 00 33 00 , and so on.

These no test on more PNA.

Thank for your solution
but can you explain for more detail because i have same problem as you and i am novice

anyway thank you in advance

Hello all,

Unfortunately, my Chinese 7" PNA SdCard.exe this does not start ...

Originally Posted by catymag

Install Garmin Communicator plugin.
Insert your sd in a card reader and plug it to pc. In the desired SD card create a directory Garmin and copy in it a file gmapsupp.img with some real .unl
Go here:

Code:

Please Login or Register to see the links

After a short wait a line like this will appear:
SD Card ID 3665475083

I've read somewhere that Garmin Communicator Plugin reads some unlock codes from the SD card, decrypts them, extracts UnitID, and shows UnitID to you.
I.e. it doesn't read SD card CID.