[Android Apps and Games] RyanCr7:
If you are someone like me who encountered countless problems while installing Viper4Android on your Android 10 or 11 device and have no idea what to do then you are in the right place. Just download and install the apk from the attachment below.

You need to be rooted with magisk but you can still give it a try if you don't have magisk on your device.

Steps -

* Disable MusicFX or any other sound mod you are using either from Setting/App Manager/Apps or by installing Ainur Narsil magisk module

* Reboot

* Now remove Ainur Narsil magisk module from magisk and install Audio Modification Library (This is required in case you have leftovers from last sound mod)

* Reboot

* Now download the app from the attachment

* Install and open the apk. The app will ask you to install drivers. HIT OK

* The phone will automatically reboot and install Viper4Android magisk module

* Open the app and check. It should be working by now.

If it doesn't work -

* Install Audio Compatibility Patch magisk module. By now you will have two magisk module installed. (Audio Modification Library and Audio Compatibility Patch)

* Reboot

* Open the app. It should work now

* Still no? - Turn on legacy mode from app setting

* Still no? - Turn on compatibility mode from app setting

V4A should totally work by now

Edit : On one plus phones you need to change your seLinux mode to permissive first and then install viper4android.

Use seLinux Mode Changer for that.

Edit: All files are attached at the bottom of the post

Edit 2 -

If none of the above solution is working for you.

Download Viper4Andrpid app from here

Download latest Magisk 21.4 from here

- Flash magisk from recovery

- Then open the Viper4Andrpid app and it'll ask you to update the drivers (or won't, depending on if you already have the drivers installed)

- If phone reboots then open the app again and turn on legacy mode from options

- If phone doesn't reboot, go to options and turn on legacy mode

It should be working now

Edit 3-

If the above two methods don't work and you have enforcing SELinux, try this.

• Disable MusicFX

• Install magisk 22.1

• Install Ainur Narsil magisk module

• Reboot

• Go to magisk and remove Ainur Narsil magisk module

• Download Viper4Android 2.7.2.1 from here

• Open it. It will ask you to install drivers. Click Ok and the phone will reboot. Don't panic.

• Open Viper4Android. Turn on Legacy mode. You will see the Viper4Android app icon on your status bar.

• Go to magisk. Install Audio Modification Library magisk module.

• Reboot

• Go to magisk again and install Audio Compatibility Patch magisk and select the options mentioned below -

- Patch Audio Policy : Vol- (no)

- Patch method : Vol+ (new logic)

- Remove notification helper : Vol- (no)

- Patch USB policy for USB dacs? : Vol- (no)

- Use lib workaround: Vol- (no)

• Reboot

• Open your music player and play a song to check if Viper4Android works now

• If you have never used V4A before, just turn on Master Limiter and Speaker Optimization

If that fails too -

• Unistall Viper4Android app

• Remove Audio Compatibility patch

• Reboot

• Install Viper4Android app and open it

• Enable Legacy mode from top right

• Play a song from your Music Player and turn on Master Limiter in the Viper4Android app

• Now turn on speaker optimization

If Viper4Android doesn't process in the Youtube app or Spotify, install the Audio Compatibility patch like I mentioned above and reboot

Fix 6:

If none of the methods above works then it's likely you messed up somewhere in the process. Unistall all the modules and Viper4Android.

Download the SeLinuxMode Changer app and set your SELinux to permissive. (If you want that)

App link :

Release v11.0 · MrBIMC/SELinuxModeChanger

updated to the latest libs and tools implemented app shortcuts to quicktoggle between permissive and enforcing modes new icons and notification styles adaptive icons (including shortcuts) for 8.0+ ...

github.com

Reboot and go to the top of the post. Follow the very first method.

Fix 7: (May 11, 2022)

I have added Aosp Soundfx remover and V4a fx 2.7.2.1 in the attachment.

Flash Aosp Soundfx remover

Reboot

Turn on mobile data/wifi

Flash v4a fx 2721

Reboot

Open Viper4Android app and install the drivers (if the app is asking you to install)

Reboot

Edit : If you encounter distorted/buggy/laggy audio, clean install viper4android again. But this time keep Ainur Narsil and Audio Modification Library magisk module installed

In OnePlus devices or OxygenOS roms you might need to install the driver twice or thrice.

Credit -

Team De Witt and Viper Acoustic

I did not create the app. I just found a way to get it working in some complicated Android 10 - 12 roms

Thanks for reading and have a nice day!

Edit 69:

If the audio isn't loud enough, go to master limiter, drag that output gain slider to right(6db).

If it's still not loud enough, turn on playback game control, tap on it and customize gain and threshold to your liking.