Hey all first time posting been browsing for a few weeks now. I have heard it both ways on the OEM integrated brake controller for my 2011 Ram 1500 Big Horn, that you have to get the flash update and that you do not. The dealership says that it is mandatory and it will not work if you do not. Any advice? I pick up my new TT next week and want to make sure it is working properly before I have to tow it. Thanks for any help!