you don't need a resistor. I made modifications to the tricore ah4 cable (three extra wires soldered).
AH4 now connects to ZGW on the table using ethernet. programming / coding option. ah unlocks cas4 / 4 + on the bench. you can add a key, change vin. I could not change the key frequency.
I have one question. after unlocking you need to restore cas. can it be in unlock mode?
Regards