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How To Install ViPER4Android Audio Mod

ViPER4Android Audio Effects engine developed by Forum Member viper520 and maintained by Recognized Contributor zhuhang. this is the BEST audio mod that you can put on your phone and/or tablet.


Download the ‘ViPER4Android’ , run it and follow the on screen instructions and once the phone has restarted you should notice an improvement in the sound quality.

  1. Download ViPER4Android_FX_2211-1_Android4.0~4.3_en.zip (for ICS and JB) and extract it.
  2. Copy and install the ViPER4Android_FX.apk file to your Android device.
  3. When the app is installed, open it and allow root permission when prompted.
  4. When you are asked to install Audio Drivers, allow it and select the driver according your phone’s CPU type (see below).
    FX 2208+
    Marvell ZTE U880 or similar processors(PXA920) — Without VFP (PXA920) (Convolver and VHS+ disabled)
    All Tegra2/ARM — With VFP
    All Single-core with freq equal or less than 800MHz — With VFP
    All Qualcomm/Snapdragon with freq higher than 800MHz, regardless of cores — CortexA8 with NEON
    All other Single-core with freq higher than 800MHz — CortexA8 with NEON
    All other Dual-core, Quad-core,Octa-core with freq higher than 800MHz — CortexA9/15 with NEON
    If Qualcomm QSD8250 has issue with CortexA8 with NEON, try With VFP

    XHIFI 2101+
    All CPU with freq equal or less than 800MHz — Recommended do not use
    ZTE U880 or same CPU(PXA920) — Without VFP (PXA920)
    Tegra2/ARM — With VFP
    ALL others — CortexAx with NEON

  5. When the drivers are installed, reboot the device.
  6. Now go to your phone’s Settings> Sound> Effects and select
  7. Extract the IRS Starter Pack zip file. You will find some sub-folders inside it.
  8. Connect your device to computer and look for a folder named ViPER4Android/Kernel on your phone’s SD. If you do not fond this folder/path on the device, creare yourself.
  9. When you get into the Kernel folder, copy/paste all files with .irs extension inside this folder.
  10. Now open the ViPER4Android FX app and enable your preferred options.