[xander20005]

The pass is not for you, or others who want to learn! if you need, you can ask from me or volavka in this case.

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and if we are here to help others, lets share some algoritms...maybe you want to share some if you have?

[volavka]

Calm down guys , we are here to help each others
OFFTOPIC i think Mr.Johneer using some africans magic for calc crc in bsi ,,, even new tools not make it

[Autokent]

For 37375 km

Algo for DASH

Offset 00000000
____1_____________2_____________3_____________4
FA B3 05 00 || 05 4C FA FF || F9 B3 05 00 || 06 4C FA FF

1. 0005B3FA = 373754 - (4) is 100 meters = 400 meters.
2. FFFA4C05 = -373755 - (5) is 100 meters = 500 meters.

3. 0005B3F9 = 373753
4. FFFA4C06 = -373754

For 2300 km - need
____1_____________2_____________3_____________4
D8 59 00 00 || 28 A6 FF FF || D8 59 00 00 || 28 A6 FF FF

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Algo for BSI

Mileage is unencrypted and fully coincides with the mileage of the dashboard.

Correct mileage is located at Offset: 000004EC - 000004EF - 4 bytes

00 05 B3 FA = 373754

I would suggest that would be sufficient to replace these 4 bytes to the correct mileage, all the other places of the controller writes its own.

If I made a mistake - please correct me and tell where the error is.

[volavka]

Dash: 2500km *10 = 25000 to hex 0061A8 , swap bytes = A86100 xor FFFFFF = 579EFF
BSI .: 2500km * 10 = 25000 to hex 0061A8 ........56EE is crc
algo is simple but crc really pain in the ass ,i have tried before to learn it but without success

[zckariya70]

The pass is not for you, or others who want to learn! if you need, you can ask from me or volavka in this case.

---

and if we are here to help others, lets share some algoritms...maybe you want to share some if you have?

Yes correct mate , but u have hided a (BAD NON WORKING DUMP)

[Autokent]

Dash: 2500km *10 = 25000 to hex 0061A8 , swap bytes = A86100 xor FFFFFF = 579EFF
BSI .: 2500km * 10 = 25000 to hex 0061A8 ........56EE is crc
algo is simple but crc really pain in the ass ,i have tried before to learn it but without success

Your aloritm for dashboard also suitable, but my algorithm is more intuitive and works as well as the you suggested)

I, too, yesterday tried to understand how to calculate the checksum.
Therefore he suggested that the controller recalculates its own.
Maybe you can fill in a checksum 00 00 or FF FF
I do not have such a car that would test this hypothesis.

[Johnner]

Dash: 2500km *10 = 25000 to hex 0061A8 , swap bytes = A86100 xor FFFFFF = 579EFF
BSI .: 2500km * 10 = 25000 to hex 0061A8 ........56EE is crc
algo is simple but crc really pain in the ass ,i have tried before to learn it but without success

Your aloritm for dashboard also suitable, but my algorithm is more intuitive and works as well as the you suggested)

I, too, yesterday tried to understand how to calculate the checksum.
Therefore he suggested that the controller recalculates its own.
Maybe you can fill in a checksum 00 00 or FF FF
I do not have such a car that would test this hypothesis.

It won't work mate,like you used to do it years ago on these machines.

You need to enter the correct CRC (It's not a checksum ! ).

Hint : It's a 1021 based polynomial algo...