I know @dyezak and myself have moved over to the IKM0S Rom at this point (with a huge thanks to @jyamona ). While I've gotten cruise control functional and the MDrive icon lights up in the cluster, the MDrive menu in the IDrive is still non functional with no way to access MDM and Darrick confirmed the same on his car. I did wire the Power button to pin 12 of the 1st connector in the DME (gray one as stated in M3 DME pinout, 1M DME doesn't show any connections for this lead) but it doesn't light up or make any difference that I can notice. Open to ideas from anyone really, especially @Bimaxtremeretro