bmw 4 digit isn help

[sexyceta]

hi ihave bmw akl cas 3+ista ecu is edc16c35 i down grade cas gives me isn 3e54ac26 how can i use this to make key.i have tried 16/64 method but say data is wrong can i convert isn to 32bit i have another cas with key not checked if 4 or 32 which is best way to go thanks

[birchbark506]

what tool are you using?

[alonedark]

put read file

[sexyceta]

hi i have read this eeprom with acdp i down grade with autel 508

[sexyceta]

file read with acdp

[rafal]

vin: WBAPX52070CT98016
isn: AC 26

[sexyceta]

yes correct need long isn for key i have cas 3 unencrypted from a 2010 1 series with key can i edit it to to match ecu original is 5 series 2007