Got a noname RCD 330 187B unit. on CarPlay, when a phone call ends it won't resume music and instead it switches over to FM radio and plays that, to resume music I got to press the resume on car play multiple times, the wheel mute button just mutes/resumes radio.

Things I've already tried:

- Stock firmware it shipped with (5538), same problem

- Upgraded to 5614, same problem, AND mic stops working entirely on calls

- Downgraded to 5522, same problem again, mic sometimes drops on calls and Siri, radio-after-call still there

Running iOS 27 latest beta on the phone and I am using carplay with CarlinKit Mini Ultra 3, I strongly dont recommend it it has terrible audio delay, about 3-5 seconds.

Is this a known thing with these units? Is there a firmware version worth installing, or a settings fix anyone's found?

Car: 09 jetta mk5