B38 yo B48 engine Swap

After my B38 broke down, I decided it was a good idea—I don't remember exactly when—to swap it to a B48 because of how much I loved the car. After covering the cost and installation of all the parts, I finally got it. I only have the software left! Can anyone help me...? I understand that the FA needs to be modified according to the new engine in E SYS. I've also read that the DME VIN has to match... Besides the ISN, is that true? How could I include the VIN in the DME if that were the case...?