Did you try running kmutil trigger-panic-medic --volume-root /Volumes/<YourVolumeName> in recovery mode? Hi mallen6:I try to do : Remove the extension from /Library/Extensions. Boot to macOS Recovery. Run Terminal. Enter the command kmutil trigger-panic-medic --volume-root /Volumes/<YourVolumeName>. Restart Mac. Then repeat my steps. But it still didn't worked.

You need to add the "HiddenPort" property to your plist and specify "False", this will make it appear in Network Preferences as a Modem.  I have tried to add the "HiddenPort" property to my plist and specify "False". But it doesn't work. Does it need other settings? I am new to dext, is there any sample code about this can be shared？

Check the imported provisioning profile in Signing&Capability, "com.developer.driverkit.transport.usb" is also not included.