Well this is interesting. Thank you for the information, Carson, and for linking this thread here.
I have started a thread not too long ago, trying to add the feature of ACC with
STOP to those 2014 Jeep Grand Cherokee's who came from the factory with ACC without
STOP. You can find the thread at this link
The information that ARIB is sharing with us is isgnificant in ways we do not fully comprehend. Based on my research, using VIN numbers of different 2014 vehicles, the difference is in the ABS control module, as the radar eye (ACC Module) is the same. If I may speculate:
1) they either installed an ACC Module from a 2011-2013 model
2) they installed the proper module but they did not flash it with the correct firmware revision.
By any means, please keep us informed. Maybe after all, there is a firmware upgrade solution for us. As I said it in numerous other places, I believe the retrofit of STOP on a 2014 MY Jeep is not only possible but also economical (several hundred dollars). It would not be possible on prior MY vehicles because they lack other sensors such as the camera by the rear view mirror.