I think this answers it well. Yes your warranty is voided.
Pasted from the MP Thread: https://g20.bimmerpost.com/forums/showthread.php?t=1834548
Now to the second most asked question: "What happens to my Warranty?"
We have went over the warranty aspect many times before, but lets give this...
I've noticed a significant volume difference when I switch from satellite radio to apple car play (Spotify). Anyone else notice this or found a solution.
The audio is significantly more quite using car play vs. other methods.