Please upgrade via PC.
For details, please refer to the video:https://youtu.be/AwQTbqYCE9U
1. Please update your product to the latest software version through online upgrade and PC upgrade to try to solve the problem.
Online operation steps video：https://youtu.be/dHWs0Pk0ehE
PC update operation steps video：https://youtu.be/AwQTbqYCE9U
2. Please clear the carplay car connection record as well as Bluetooth and WIFI on iPhone.
Operation steps video：https://www.youtube.com/shorts/YYcmyAYqeUU
Operation steps video：https://www.youtube.com/shorts/vf4qRiJDPY0
1. Update your product to the latest software version.
Online operation steps video：https://youtu.be/dHWs0Pk0ehE
PC update operation steps video：https://youtu.be/AwQTbqYCE9U
2.Adjust the audio mode of U2-AIR, audio mode 1, 2, 3 can be tried.
Operation steps video：https://youtu.be/PobYJgFYVjs
1.Clear the carplay car connection record as well as Bluetooth and WiFi on iPhone. https://www.youtube.com/shorts/YYcmyAYqeUU
2.Try connecting again. https://www.youtube.com/shorts/vf4qRiJDPY0
1.Clear the carplay car connection record as well as Bluetooth and WiFi on iPhone. https://www.youtube.com/shorts/vf4qRiJDPY0
2. Please reset your car.
Operation steps video：https://youtu.be/eVTEtrAo3j0
Portuguese 
English