How to Install Viper4Android on Marshmallow [All Devices]

It has only been a couple of days since Marshmallow released for Nexus 5, but some of you may already be missing the sound boost from Viper4Android on Lollipop.
Well, luckily for you, things aren’t messed up between Viper4Android and Marshmallow, instead, just changing the SELinux policy to permissive ensures that you can install Viper4Android on Nexus 5 with Android 6.0 on-board without any issues.

This has been tested by xda user Kpoch, and he mentions that you need to use the Viper4Android normal MOD, not the one with Surround sound to let things go smooth.
Grab the necessary stuff required to install Viper4Android on Marshmallow from the download links below and then follow the quick step-by-step guide.

Download Viper4Android (without surround sound) (.zip)

Download SELinuxModeChanger v3.2 (.apk)

Instructions

1. Download both the files from the links above to your Nexus 5.
2. Install Busybox.
3. Install SELinuxModeChanger .apk file that you downloaded above and set SELinux to permissive mode.
4. Reboot to TWRP recovery and flash the Viper4Android .zip file you downloaded above.
5. Wipe Cache and Dalvik Cache.
6. Reboot phone.

That’s all. This should get Viper4Android on your Nexus 5 running Android 6.0 Marshmallow.