New Solution for low volume headphones

[TheDiegoLuiz]

Using Xiaomi.EU Beta 9.8.9 on Redmi Note 7, I realized that my audio is extremely low when using a headset, even with apps like Viper or Dolby. The solution is to change a line using a build editor (you need to root), look for the ro.miui.region line and change it to BR and you will get your loud sound back.

Do not forget to restart the phone after the procedure.

Credits to user: antoniocnog

Sorry my bad english!

 

[Igor Eisberg]

I've found a peculiar ro.miui.region check in the audio driver of your device's specific SoC (Snapdragon 660), a file called audio.primary.sdm660.so.
Looks like we're dealing with a driver-level audio regulation. We'll need to decide what to do with this fact.