[Android Stick & Console AMLogic based Computers] Reaper Man:
I do not have a device for sbx v11.8

Several ideas before really getting deep.

* Did you do a clean firmware install (recommended !!! )?

* Root access is needed(Do not disable).

* Do not install third party equalizers/players... might have issues later.

* Have you gone to Viper >settings >Convolver selection?

* There should be an option to turn on >legacy mode if you find there is no processing.*

Getting a bit deeper

, if you search around XDA,Github, Google

* Related to Root access, you can find Magisk (module available) or Supersu(init.d script available).

Deep, deep

Submarine deep

* Possible error VIPER FX. You may need to delete the viper files , reboot and check if it works.

**Copied from 4pda faq **

(!) Install V4A as a normal application, run it, install the drivers and restart the device.

If the application after that gives an error or does not work as it should, then try to install according to the instructions below:

0. Remove previously installed drivers (via an option in the application) and the program itself, restart the device.

1. Extract the application ( ViPER4Android_FX/XHiFi.apk) from the ViPER4Android_FX/XHiFi_XXXX_en.zip archive and copy it to /system/app/*here*

2. Change the apk permissions to rw-rr (644) . Reboot your device.

3. Launch the application (FX/XHiFi) and give it root access.

4. In the prompt window for installing drivers, selectYes in "Install/Update" .

5. After installation is complete, reboot your device.

7. If out of all sound enhancers, you only want to use V4A, see option 1 . If you want to use V4A along with other enhancers (eg Beats Audio, etc.), then see Option 2.

--->>Option1.

-----------8. Select V4A(fx or xhifi) in Sound Settings > Music Effects of your player (Don't worry, fx and xhifi start together.)

-----------9. Make sure that in V4A(fx or xhifi), Menu > FX Compatibility Mode is set to Normal .

-----------10. DownloadIRS Starter Pack.zip and extract all .irs files to:

---------------------- for Android 4.xx: /storage/ViPER4Android/Kernel/* here * (if this folder does not exist, then create it manually - save the letter case!)

---------------------- for Android 5.xx: /storage/emulated /legacy/ViPER4Android/Kernel/*here* (if this folder does not exist, then create it manually - save the letter case!)

---------------------- for Android 6.xx: /mnt/runtime/write/emulated/legacy/ViPER4Android/Kernel/*here* (if this folder does not exist, then create it manually - save letter case!)

-----------11 . Ready.

--->>Option2.

-----------8.Open alternately V4A (both fx and xhifi), and in Menu > FX Compatibility Mode select - Compatible .

-----------9. Download IRS Starter Pack.zip and extract all .irs files to:

---------------------- for Android 4.xx: /storage/ViPER4Android/Kernel/ *here* (if this folder does not exist, then create it manually - save the letter case!)

---------------------- for Android 5.xx: /storage/ emulated/legacy/ViPER4Android/Kernel/*here* (if this folder does not exist, then create it manually - save the letter case!)

---------------------- for Android 6.xx: /mnt/runtime/write/emulated/legacy/ViPER4Android/Kernel/*here*(if this folder does not exist, then we create it manually - we save the case of letters!)

-----------10. Ready.

Hope info is applicable, try the easy stuff first, other wise wait for a new release or return to older firmware.