Well After talking with a U connect representative several weeks ago I came away a bit bewildered. I simply asked how the soft reset or hard reset can be performed. I still laugh when I think about this conversation. This guy said there was neither and that the only thing that can be done is that the whole unit be replaced at the dealer. So as a platform administrator/developer for two globally used platforms I called BS then he seemed to get a bit upset.....chuckling again. I guess the programs magically install themselves when the units are built. I was probably loading DOS from a floppy before the kid was even a thought in his daddy's er.......kid was born but I digress. Anyway long story short after finding and verifying the reset process I reset the system and no more problems. My 2018 8.4 went bonkers and they couldn't find a problem either. No codes so no nothings, could do nothing. I told them to reinstall the firmware and software and didn't have another problem with that one after that. I will say that with my 2021 I do not have a lot of the gee-whiz stuff that may be causing problems for some of you. I was aware of the chip shortage and didn't want to wait for ever so didn't order with lane sense, blind spot monitoring or towing electronics etc. I figure I've been towing for 40 years and haven't needed it before so.... Anyway Truck is in the shop for a week now, for the Mega Cab raddle in the rear passenger corner. New cab mounts didn't fix it. That work was last week. They brought in an engineer so the senior service Tec and the engineer are trying to figure it out now. If these guys figure out the rattle I will post what they found. Guess I am happy that I have a long relationship with the dealership so when I tell them I have a problem they believe me and don't try to Blow smoke up my @#$$.