[muskatas]

Hello mates. I have interesting situation. Car was with dead ecu (no communication). They got salvage dde and it still had no communication. Car came to me, changed dde relay, few fuses and it started to communicate but then fun part started. Readed edc16 isn (short 24E6) and Cas3++ isn long and found that cas isn has been manipulated (incorrect-24A39324A39324A39324A39324A39324). There is working key for data decrypt. Someone has tried to change it to 4bits before me. So it means now that original data has been lost.
Now is it possible to generate new cas3++ isn according to short dde isn. Or should I look other eeprom and do adjustments? 

0L15Y(512K)-0108(14)EEP.zip
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[lustek]

Hi,

I think that the best solution for You will be write to CAS dump with well known ISN and change it to DDE ISN