First you need viper audio mod [http://forum.xda-developers.com/show....php?t=2191223
Now download viper audio zip file and open with your file explorer, I'm using es file Explorer you must enable Root Explorer and Mount
/system as writable. Ok now don't install the viper apk located inside the zip just extract it to any folder you like, now copy the Viper audio apk file to /system/priv-app
Ok now one more thing, You must change the permissions on the apk file, so in es file Explorer you long press on the file, then press on more/properties then permissions, change them to
Owner: read write execute
Group: read write
Now reboot and then you should see Viper4Android as an app in your app drawer, open then install audio drivers then at the top right of your screen you'll see three dots which is the menu for the app, check FX compatibility mode and check compatible, then check UI setting to moderate or expert.
That's it your done, hopefully this helps someone out cause I was really frustrated that i couldn't get this to work cause imo this is the best audio mod for Android.
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