I've found the A2L for the same ECU, albeit with a slightly older (5489) software version. By comparing the two, you should be able to find all the necessary information.
I also changed the gearbox and had to change some transmission info in the ECU to enhance ride quality and regain the lost cruise control functionality.
Although I don't recall the specific parameter names or IDs, but the process was relatively straightforward.
I remember setting those parameters by logging both the engine speed and vehicle speed, then calculating the ratio of vehicle speed to engine RPMs.
Here is the DL link, as I'm unable to upload 3.2MB
https://drive.google.com/file/d/1niUXcyZoTqIW3bBdkyS-VIjU80CZ86a4/view?usp=sharing