When you read the data from the old one you should save it then you load the data on the new one and then you write it to new TCM. I use autel for this programming its much easier with autel.
Hey, I have the same tool but can't figure out how to write the data from the old tcu to the new one. I bought a second hand gearbox with the same part number, I went to erase gearbox and now I have the personalised and activated NO. But when I click load and select old filed it doesn't do anything. Can you tell me what I need to do next. Tia
