You must manually set the original BMW iDrive source to "AUX" for audio transmission from the Android unit to the car speakers. Flickering or Graphical Lines:
If the head unit is unresponsive or "frozen," a manual reboot is the first step. bmw 8259ver01 user manual fix
Ensure your phone is not simultaneously connected to the original BMW Bluetooth for media, as this can cause interference. Some manuals suggest checking "Call Audio" but unchecking "Media Audio" on the original car Bluetooth settings. 3. Resolving Display & Audio Errors You must manually set the original BMW iDrive
Enter by pressing and holding the left third (1/3) of the screen for 3 seconds. bmw 8259ver01 user manual fix