2018 FIRMWARE CMU UPDATE PROCEDURE-WORLDWIDE
https://techblog.jeppson.org/wp-content/uploads/2019/02/2018-FIRMWARE-CMU-UPDATE-PROCEDURE-WORLDWIDE.pdf
Files needs: https://drive.google.com/file/d/1bbLmJ57XL8TqhCsw4rJ0zfta9GjVM9yL/view?usp=sharing
Installing Android Auto / Apple Carplay retrofit in Mazda CX3