I've got a small problem with a huge transformation of my car.

The small problem is called immobelizer.
Now thats not the only thing that has te be changed. I got a spearkey that isn't connected with the ecu.
And the km counter stahds on 150000km but on the papers of the car inspection. So it has to be changed.

So i went for an answer on internet and found Vag eeprom programmer 1.19 but could only download the 1.18

Is other forums they said that i could uqe the obd connection cable of the vag vcds program.
Vut has i finished the hole build and connected the computer on the car i dit connect vcds to rhe car but has i tried to upload the ecu to the vag eeprom proggrammer 1.18 the program told me he could not find the ecu.

What am i doing wrong?
No the battery was connected, the egnition was on, the battery had 12v.

Is it the cabble and if so where can i find the right cable?
Do i have to change something so the cable is useable?
Did i have a bad download?

Please as the car sits now i only have a brick.
And its maybe my first time working with non official programs. But i want to learn more about programming the ecu.

Thanks Alain