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- Thread starter micro0me
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Help Support My Nissan Leaf Forum:
Cool! Good information.
I took a picture of the code for my car when this issue first became apparent, so that if my card ever went missing I could easily obtain a replacement. This fellow is clearly providing the next best option.
I took a picture of the code for my car when this issue first became apparent, so that if my card ever went missing I could easily obtain a replacement. This fellow is clearly providing the next best option.
cliff
Well-known member
The confirmation code is clearly a 16 bit hex code, so I tried various combinations
of simple checksum, but no joy, so now on to 16 bit CRC's. Being lazy
I checked for any online calculators, and found one which would show 8
different results for a typed in string. I typed in my model number, and
serial number (as one string), and there it was in one the 8 results,
my confirmation code!
The web site is:
http://www.lammertbies.nl/comm/info/crc-calculation.html
of simple checksum, but no joy, so now on to 16 bit CRC's. Being lazy
I checked for any online calculators, and found one which would show 8
different results for a typed in string. I typed in my model number, and
serial number (as one string), and there it was in one the 8 results,
my confirmation code!
The web site is:
http://www.lammertbies.nl/comm/info/crc-calculation.html
garsh
Well-known member
Which one of the 8 results?cliff said:
^ Also good information. And $10 cheaper. 
So I just did my own car and it's Unit code + Serial number, all run together with no dashes, and the result is the four digit string under CCITT (Kermit) after the 0x.
So I just did my own car and it's Unit code + Serial number, all run together with no dashes, and the result is the four digit string under CCITT (Kermit) after the 0x.
cliff
Well-known member
Ok since the secret of which one has been posted, here is some C code
to do the calculation(from the kermit documentation):
#include <stdio.h>
#include <string.h>
main()
{
unsigned short c, crc, q;
char string[20];
char* ptr;
printf("ModelSerial : ");
fgets(string, sizeof(string)-1, stdin);
string[strlen(string)-1] = 0;
ptr = string;
crc = 0;
while (*ptr) {
c = (unsigned short)*ptr & 0xff;
q = (crc ^ c) & 0xf;
crc = (crc >> 4) ^ (q * 4225);
q = (crc ^ (c >> 4)) & 0xf;
crc = (crc >> 4) ^ (q * 4225);
ptr++;
}
crc = ((crc & 0xff00 ) >> 8) | ((crc & 0xff) << 8);
printf("\nConfirmation = %04X\n", crc);
}
to do the calculation(from the kermit documentation):
#include <stdio.h>
#include <string.h>
main()
{
unsigned short c, crc, q;
char string[20];
char* ptr;
printf("ModelSerial : ");
fgets(string, sizeof(string)-1, stdin);
string[strlen(string)-1] = 0;
ptr = string;
crc = 0;
while (*ptr) {
c = (unsigned short)*ptr & 0xff;
q = (crc ^ c) & 0xf;
crc = (crc >> 4) ^ (q * 4225);
q = (crc ^ (c >> 4)) & 0xf;
crc = (crc >> 4) ^ (q * 4225);
ptr++;
}
crc = ((crc & 0xff00 ) >> 8) | ((crc & 0xff) << 8);
printf("\nConfirmation = %04X\n", crc);
}
Bob
Well-known member
What am I missing? Can't you remove your current SD card and literally copy it for a backup? In that case, you won't need any special decoding or codes. These cards are so cheap.
Bob
Bob
Bob said:
I'd have to do a deep search for some old threads on the subject, but I think the answer is "I don't think so".
cliff
Well-known member
The card is formatted with a non-standard format, so that it can not be copied.Bob said:
If the card is reformatted, wiping out the data, it can then be used for something
else.
arnis
Well-known member
I've never tried this but applications for hard drive cloning should theoretically clone flash memory too.
Before anybody even tries something it is recommended to turn write protection switch (on the side of the card) on.
Cloning means reading every byte (even unknown or corrupt information) and writing the same on another media.
Before anybody even tries something it is recommended to turn write protection switch (on the side of the card) on.
Cloning means reading every byte (even unknown or corrupt information) and writing the same on another media.
Randy
Well-known member
They don't call it "Secure Digital" (SD) card for nothing....
In the site:
http://nissan.navigation.com/product/Catalog/Catalog_LEAF_2013/EV-NAVI-Europe-2015/sku/NISSAN-EV-EU-15/en_GB/NissanEMEA/GBP
We have the info how to obtain those codes from free:
http://www.navigation.com/is-bin/intershop.static/WFS/Navteq-Site/Navteq/en_GB/documents/Nissan/Nissan_EV/nissan_ev_activation_instructions_EN.pdf
by doing this:
- Menu
- Info
- Navigation Version
We can obtain the 3 codes easly in our EV:
Unit Code, Serial Number and Confirmation Code.
http://nissan.navigation.com/product/Catalog/Catalog_LEAF_2013/EV-NAVI-Europe-2015/sku/NISSAN-EV-EU-15/en_GB/NissanEMEA/GBP
We have the info how to obtain those codes from free:
http://www.navigation.com/is-bin/intershop.static/WFS/Navteq-Site/Navteq/en_GB/documents/Nissan/Nissan_EV/nissan_ev_activation_instructions_EN.pdf
by doing this:
- Menu
- Info
- Navigation Version
We can obtain the 3 codes easly in our EV:
Unit Code, Serial Number and Confirmation Code.
Hey, mafgod, would you do an experiment for me when you have a chance? I'd like to see what happens if someone followed those options without the SD card in the car. Can you take out your SD card and then see what happens?
I'm pretty sure that the Confirmation Code isn't there if the card is gone.
If we can get only the Unit Code and Serial Number, the Confirmation Code is easy to obtain.
For example, and following the example:
http://www.navigation.com/is-bin/intershop.static/WFS/Navteq-Site/Navteq/en_GB/documents/Nissan/Nissan_EV/nissan_ev_activation_instructions_EN.pdf
Unit Code = QY72-00ND
Serial Number = 0000-9323
Confirmation Code = 62A8
If we go to the page:
http://www.lammertbies.nl/comm/info/crc-calculation.html
and write the Unit Code + Serial Number all together: QY7200ND00009323
select ASCII as input, we get:
CRC-CCITT (Kermit) 0x62A8
Which is:
Confirmation Code = 62A8
Is that easy
For example, and following the example:
http://www.navigation.com/is-bin/intershop.static/WFS/Navteq-Site/Navteq/en_GB/documents/Nissan/Nissan_EV/nissan_ev_activation_instructions_EN.pdf
Unit Code = QY72-00ND
Serial Number = 0000-9323
Confirmation Code = 62A8
If we go to the page:
http://www.lammertbies.nl/comm/info/crc-calculation.html
and write the Unit Code + Serial Number all together: QY7200ND00009323
select ASCII as input, we get:
CRC-CCITT (Kermit) 0x62A8
Which is:
Confirmation Code = 62A8
Is that easy
arnis said:
I might give that a try - I use Acronis True Image to backup and clone my HDs.
Nice, mafgod, I just tried it with my 2011 and it worked there too. Thanks!
moonblue96
New member
- Joined
- Mar 6, 2016
- Messages
- 2
mafgod said:If we can get only the Unit Code and Serial Number, the Confirmation Code is easy to obtain.
For example, and following the example:
http://www.navigation.com/is-bin/intershop.static/WFS/Navteq-Site/Navteq/en_GB/documents/Nissan/Nissan_EV/nissan_ev_activation_instructions_EN.pdf
Unit Code = QY72-00ND
Serial Number = 0000-9323
Confirmation Code = 62A8
If we go to the page:
http://www.lammertbies.nl/comm/info/crc-calculation.html
and write the Unit Code + Serial Number all together: QY7200ND00009323
select ASCII as input, we get:
CRC-CCITT (Kermit) 0x62A8
Which is:
Confirmation Code = 62A8
Is that easy
I tried this and got very excited after the code was accepted on Nissan.navigation.com. Selected overnight shipping and once I had the card I went to put it in and got the "SD unlock NG" code. A very pricey mistake. Not sure what could have gone wrong but this didn't work for me.
Any other options?
moonblue96 said:
100% sure you input the correct data for the Serial Number and Unit Code? Make a mistake of even one character and the Confirmation Code will be different that the one the unit expects from the SD card.
moonblue96
New member
- Joined
- Mar 6, 2016
- Messages
- 2
mwalsh said:
Yes, made sure to triple check prior to purchasing.
SET: QY7200ND
SNO: 00011498
confirmation code that came from http://www.lammertbies.nl/comm/info/crc-calculation.html : 8090
The nissan page accepted all the numbers and went to the payment page. I thought it seemed too easy. Now I'm bummed.
