I have an unwanted ME 7.5 ECU 06A906032 FK from a 2.0 AZJ. I want to put the software from 06A906032 HN (1.8T AUQ) into it.

Apparently, the flash works, but the first lambda sensor doesn't work properly – it throws a heater circuit error (which is strange because both use the same LSU 4.2 lambda sensor).

Now the question:

Can I copy the heater control maps from the 06A906032 FK 3940 map into the 06A906032 HN software?

The problem is that there is no Damos/XDF for 06A906032 FK 3940 anywhere, and it's not clear if this would even help.

Or would it be enough to add a resistor on the wires between the sensor and the ECU?
Since it throws a heater error, it suggests that the 06A906032 FK ECU has different resistors for the heater circuit.