Mercedes W211 OM648 Engine ECU Virginize

Hey,

I would need to do virgin for engine ECU, W211 OM648 Bosch EDC16C2-7. Original ECU missing pulse to one injector.
I would like to do virgin, so we could adapt it with original SDS. Of course it is from donor car.
Mercedes part number A6481502979 Bosch: 0281012363 CR3. 43.
So pros, i'm asking you how should i proceed? I have K-Tag.

Thanks in advance!