1

... And after that update no matter what I do, my boldbeast is not working.
My Baseband version is N950FXXU5DSB1
build number : PPR1.180610.011.N950FXXU5DSB2

Is there anything I can do, to make the app work again?
If there's a difference: I'm using boldbeast premium

2

Android 9 disabled the call recording feature. This is the reason why your own voice is good but the caller's voice is very weak in recordings. No matter what recorder you are using in the market the result is the same. You can test and confirm this fact.

I have checked the Android 9 source code, Google added new limits to block the call recording feature. It is IMPOSSIBLE to bypass he limits without root. So to fix the problem root is the ONLY way to go.

However in some countries Samsung enabled the call recording feature in Android 9. In this case no root needed, just install Boldbeast Recorder and go.