When I started Flashing the Eeprom of the ECU I recognized, that my Pinout is different to the one I found in the Nefmoto Bench Flashing Thread, which I think is commonly used here.
Then I googled the Pinout attached, with this I was able to Read and write the Eeprom.

Now I wanted to Read the ECU via Nefmoto, but this said there’s an error with the immo. I think usually you have to connect the immo Pin to +12V, but on my Pinout this is not shown.

So finally I need the Immo Pin for my ECU.

When the Error on Nefmoto occurred  I think I also had the option to continue without immo, but I didn´t want to take that risk. Do you think I should give this a try?

I can post the Log by this evening, but i´m sure that the missing connection to the immo Pin is the Problem.
Attached you find the Pinout that is shown in the Nefmoto Bench Flash Thread if you compare this you see that its different to the one above.

On this thread pin 21 of the second picture is named as Immobilizer:

http://www.nefariousmotorsports.com/wiki/index.php/ECU_Bench_Flashing

On the pinout for my ecu this pin is missing.