TCU DQ381 EEPROM CHECKSUM

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stranger

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	TCU DQ381 EEPROM CHECKSUM « on: July 27, 2025, 07:36:31 AM »

Hello. Does anyone know the algorithm for calculating checksum in the 128kb DQ381 eeprom?
Here is how CS looks like.


« Last Edit: July 27, 2025, 07:40:12 AM by stranger »	Logged

ljscodex

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	Re: TCU DQ381 EEPROM CHECKSUM « Reply #1 on: September 03, 2025, 06:55:06 AM »

hi, did you try with the edc17crc ? i mean crc16


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stranger

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	Re: TCU DQ381 EEPROM CHECKSUM « Reply #2 on: September 24, 2025, 02:46:06 PM »

This is some kind of tricky checksum (not the standard crc16 or crc32). I know where it can be extracted from. But for this a person with good reverse engineering skills is needed

I assume that the algorithm for calculating checksums in Bosch DQ381 and Bosch DQ500 eeproms will be the same, because the structure of the eeprom itself in them is very similar.


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