The upgrade is for changing shift points, I think we might just have to update the device, and if it still doesn't work contact superchips and request that they turn that "feature" on. I think it's a limitiation of how many items that device can read, so you lose one of the sensors to be replaced with the trans temp. I'm working hard on mine now, it just took major priority so I'll be contact superchips trying at least to get that answer.