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How to install Viper4android Fx on Moto X Android 6

Hi guys, I could not run Viper4android application on my device (android 6) . I haved installed apk then install driver . But Not thing change in sound effect. I tried to search and did not find out any error?
I need some help to run app with effect sound when play music!
Thank inadvance!

Well mine has problem of installing the sound driver.
通过我的 XT1096 上的 Tapatalk发言

duongnv1996 said:
Hi guys, I could not run Viper4android application on my device (android 6) . I haved installed apk then install driver . But Not thing change in sound effect. I tried to search and did not find out any error?
I need some help to run app with effect sound when play music!
Thank inadvance!
Click to expand...
Click to collapse
How did you install the viper4android via apk or you flashed from recovery?

duongnv1996 said:
Hi guys, I could not run Viper4android application on my device (android 6) . I haved installed apk then install driver . But Not thing change in sound effect. I tried to search and did not find out any error?
I need some help to run app with effect sound when play music!
Thank inadvance!
Click to expand...
Click to collapse
In order to install ViPER4Android, you'll need your system to be properly rooted, BusyBox must be installed, and SELinux Mode must be "Permissive".
I recommend this BusyBox installer, and you can get SELinux Mode Changer from here.
Then, after everything is properly set up, you must also disable your ROM (e.g. CyanogenMod-based ROMs' AudioFX)and/or player (e.g. Poweramp's equalizer)'s built-in equalizer, and switch ViPER4Android's FX Compatible mode from "Normal" to "Compatible".

duongnv1996 said:
Hi guys, I could not run Viper4android application on my device (android 6) . I haved installed apk then install driver . But Not thing change in sound effect. I tried to search and did not find out any error?
I need some help to run app with effect sound when play music!
Thank inadvance!
Click to expand...
Click to collapse
I was able to make V4A work on my Moto X 2014 with a fix.
If you do not have Busybox or permissive SELinux, follow the instructions our mate's posted above:
KazuhiroYasei said:
In order to install ViPER4Android, you'll need your system to be properly rooted, BusyBox must be installed, and SELinux Mode must be "Permissive".
I recommend this BusyBox installer, and you can get SELinux Mode Changer from here.
Then, after everything is properly set up, you must also disable your ROM (e.g. CyanogenMod-based ROMs' AudioFX)and/or player (e.g. Poweramp's equalizer)'s built-in equalizer, and switch ViPER4Android's FX Compatible mode from "Normal" to "Compatible".
Click to expand...
Click to collapse
After Busybox installed and SELinux on permissive, you flash the Viper zip and install the driver. Right after that you open a root enabled file manager and find system>vendor>etc. You'll see an audio_effects.conf.
(I suggest making a safe copy of this file).
Rename the original audio_effects.conf to audio_effects.bak.
Save and reboot. Now try using v4a again.

brunoperissotti said:
I was able to make V4A work on my Moto X 2014 with a fix.
After Busybox installed and SELinux on permissive, you flash the Viper zip and install the driver. Right after that you open a root enabled file manager and find system>vendor>etc. You'll see an audio_effects.conf.
(I suggest making a safe copy of this file).
Rename the original audio_effects.conf to audio_effects.bak.
Save and reboot. Now try using v4a again.
Click to expand...
Click to collapse
Was this procedure required for V4A to work on your Victara? Mine worked in every ROM I tested (all Marshmallow-based) by following the steps you quoted.

KazuhiroYasei said:
Was this procedure required for V4A to work on your Victara? Mine worked in every ROM I tested (all Marshmallow-based) by following the steps you quoted.
Click to expand...
Click to collapse
Yes. I was only able to enjoy v4a after this procedure.

It's worth pointing out that V4A is going to F up your Moto Voice

Popping into this thread real quick to provide some info,
Using compatibility mode with V4A is bad news, causes extra battery drain and problems with some apps.
For every single rom and device I've used 5.0+ I've followed the same procedure to install V4A, without using compatibility mode, without having to delete a file every time, etc.
Flash the "lolliviper" zip attached to this OP.
Followed by the "Build.Prop-Tweaks" and "Soundfix-LibFiles" attached to this post.
You'll also need a way of setting selinux to permissive after every boot if you're using CM or something else with selinux set to enforced. Something like SELinuxModeChanger available here will work.
If you don't have busybox installed, V4A will tell you and help you install it.
The V4A version included in the "lolliviper" zip is not the newest , you'll need to "Check Update" via the 3 dot menu and install the latest apk.
After all this, install the driver via the V4A app, reboot, and you're golden.

Flipz77 said:
It's worth pointing out that V4A is going to F up your Moto Voice
Click to expand...
Click to collapse
Didn't know that. I was only able to set v4a on a custom ROM, so that ship was long gone hahaha
it just stops working?

brunoperissotti said:
Didn't know that. I was only able to set v4a on a custom ROM, so that ship was long gone hahaha
it just stops working?
Click to expand...
Click to collapse
Actually it still "works" because it detects your launch phrase, but after that, half of the time it just hangs without hearing your command. Sometimes it'll randomly work, but it was too much of a botch to keep it that way. I've now resorted to Noozxoide Pro: it's still a system-wide mod with modes for headset, speaker and BT, but it's installed as a "standard" app, it doesn't mess with your system and it sounds boss!

I ran across this link on a similar search on the google machine, and it made V4A installation a breeze. No manual messing with kernel settings and whatnot: http://forum.xda-developers.com/android/software/viperaudio-viperatmos-3-8-sq-driver-t3289075
Battery life has been fine running this for about a week. I don't use Moto Voice so can't comment on that.

THANKS
brunoperissotti said:
I was able to make V4A work on my Moto X 2014 with a fix.
If you do not have Busybox or permissive SELinux, follow the instructions our mate's posted above:
After Busybox installed and SELinux on permissive, you flash the Viper zip and install the driver. Right after that you open a root enabled file manager and find system>vendor>etc. You'll see an audio_effects.conf.
(I suggest making a safe copy of this file).
Rename the original audio_effects.conf to audio_effects.bak.
Save and reboot. Now try using v4a again.
Click to expand...
Click to collapse
Thanks a lot, I was already discouraged, tried several versions of viper, on diferent roms, this was the only solution, but is necessary to remember that for this file to appear in the folder, you need to open the application and save a profile, even if empty, without it you can not find the file audio_effects

If u root ur device using magisk, u can install viper magisk module...it works fine on android 6.0 with selinux enforcing..
Sent from a Motobot

ViPER4Android FX Legacy/XHiFI [Unity][Deprecated]

Deprecated - Use the New ViPER4Android v2.7:
GO TO THE THREAD LINKED ABOVE. You don't need to flash any zips. Just install it as a regular apk, allow it to install the drivers, and you're good to go.
For magisk users: I made a zip on the repo that includes the original vdc's and my profile converter (will convert your old profiles to the new and better format).
For rootless users: I made a zip to install drivers and such
Zips can be found here
ALL SUPPORT QUESTIONS FOR 2.7 SHOULD BE AT THE THREAD ABOVE.
This is ViPER4Android FX and Xhifi Unity installers
These installers utilize my Unified installer that can install on Magisk OR System if Magisk is not detected (with Pixel support).
Credits of Originality:
- @zhuhang (Official Thread)
- @Osm0sis
- Viper's Audio (Official blog)
- @ViPER520
- @Team_DeWitt
Special Instructions:
If you already know which original v4a you want to use, just add 'old' for 2.3.4.0, 'mid' for 2.4.0.1, 'new' for 2.5.0.5, or 'mat' for material to the zipname prior to flashing.
If you already know if you want it installed as a user or system app, add "uapp" for user app or "sapp" to system app to zipname.
If you already know if you want to apply the libstdc++.so lib workaround, add "lib" or "nlib" to zipname (note that there are some devices that are already known to require it and so they'll apply workaround regardless of choice)
If you already know if your device/rom requires the v4a open/close/fc audioserver workaround, add "ocw" to zipname. Otherwise, add "nocw" to zipname
To skip volkeys (if your device isn't compatible with them), add "novk" to the zipname. Note that if you don't specify the above, defaults will be applied which are: sapp, new
Make sure there are no spaces in the zipname
Audio Mod Troubleshooting Guide
Downloads
XDA:DevDB Information
ViPER4Android FX Legacy/XHiFI [Unity], App for the XDA Community Apps
Contributors
ahrion, Zackptg5
Version Information
Status: Stable
Current Stable Version: v4.4
Stable Release Date: 2019-08-11
Created 2019-01-18
Last Updated 2020-01-01

great!

Hi, tried your two modules you've posted on my Nexus 6P stock ROM. March update. Both causing bootloop and using the uninstaller provided doesn't help. Have to use mount Magisk then go to file explorer in TWRP recovery and delete the modules from Magisk folder.

kartikb said:
Hi, tried your two modules you've posted on my Nexus 6P stock ROM. March update. Both causing bootloop and using the uninstaller provided doesn't help. Have to use mount Magisk then go to file explorer in TWRP recovery and delete the modules from Magisk folder.
Click to expand...
Click to collapse
Hmm. This is probably a kernel or magisk limitation with your rom. Are you running 11.6? Try to run it without the deep_buffer Remover because this is probably what bootloops your phone. It's only necessary when you've NEED it, otherwise it may cause adverse effects. Just install V4A and see if it works.
Currently magisk still has limited boot.img compatibility which causes so.e mods to not work properly or bootloops when it's not the mod itself.

ahrion said:
Hmm. This is probably a kernel or magisk limitation with your rom. Are you running 11.6? Try to run it without the deep_buffer Remover because this is probably what bootloops your phone. It's only necessary when you've NEED it, otherwise it may cause adverse effects. Just install V4A and see if it works.
Currently magisk still has limited boot.img compatibility which causes so.e mods to not work properly or bootloops when it's not the mod itself.
Click to expand...
Click to collapse
Hi, I'm on 11.6. I've tried both modules on their own and they both have caused boot loops unfortunately.
Thanks anyway..

kartikb said:
Hi, I'm on 11.6. I've tried both modules on their own and they both have caused boot loops unfortunately.
Thanks anyway..
Click to expand...
Click to collapse
Magisk limitation. @topjohnwu is always improving magisk. I do recommend may e trying another kernel for your device which may help compatibility.

Gave this module a go, and: it's a no go... Will not boot on my Nexus 6 running Vanilla ROM 7.1.1_r26, Franco Kernel r65 and Magisk v.11.6 - MagiskSU.
After flashing uninstaller the device still doesn't boot. Had to manually remove audmodlib from /magisk in TWRP to make it boot again. And it's in audmodlib the problem is. I did a quick test where I removed audmodlib after installation (kept v4afx in place) and it booted right up (with a non-functioning module, obviously).
Attaching installation and uninstallation recovery logs. Unfortunately I'm not at a computer with ADB, otherwise I would have captured a logcat of boot for you. Maybe later...

Didgeridoohan said:
Gave this module a go, and: it's a no go... Will not boot on my Nexus 6 running Vanilla ROM 7.1.1_r26, Franco Kernel r65 and Magisk v.11.6 - MagiskSU.
After flashing uninstaller the device still doesn't boot. Had to manually remove audmodlib from /magisk in TWRP to make it boot again. And it's in audmodlib the problem is. I did a quick test where I removed audmodlib after installation (kept v4afx in place) and it booted right up (with a non-functioning module, obviously).
Attaching installation and uninstallation recovery logs. Unfortunately I'm not at a computer with ADB, otherwise I would have captured a logcat of boot for you. Maybe later...
Click to expand...
Click to collapse
The only real thing in audmodlib is could be is service.sh or system.prop otherwise it would be the vendor file, which would mean that for some reason 11.6 is bugged for vendor file mounting. Try installing and remove those ONLY and and see if it fixes it.
If that fixes it then it's one of those two. And if you're cool can you see which one it is exactly.

ahrion said:
The only real thing in audmodlib is could be is service.sh or system.prop otherwise it would be the vendor file, which would mean that for some reason 11.6 is bugged for vendor file mounting. Try installing and remove those ONLY and and see if it fixes it.
If that fixes it then it's one of those two. And if you're cool can you see which one it is exactly.
Click to expand...
Click to collapse
There has been an issue with vendor mounting in Magisk, but I believe that was for devices with separate vendor partitions (Nexus 6P, Nexus 5X, etc). I haven't seen any commits on GitHub about it though (although I haven't been keeping that close attention), so I don't know if it's been fixed.
I did find the culprit though: it's system.prop. With that file removed from /magisk/audmodlib my device booted up just fine.

kartikb said:
Hi, I'm on 11.6. I've tried both modules on their own and they both have caused boot loops unfortunately.
Thanks anyway..
Click to expand...
Click to collapse
If you wanna try this is my module for Nexus phones. I use this in my Nexus 5X Stock and PureNexus
https://www.androidfilehost.com/?fid=529152257862713260
Sry ahrion for use your thread

Seyaru said:
If you wanna try this is my module for Nexus phones. I use this in my Nexus 5X Stock and PureNexus
https://www.androidfilehost.com/?fid=529152257862713260
Sry ahrion for use your thread
Click to expand...
Click to collapse
You are literally advertising your mods in everyone's threads. Stop this and make your own thread.
This is a magisk forum, not a system mod forum.

Didgeridoohan said:
There has been an issue with vendor mounting in Magisk, but I believe that was for devices with separate vendor partitions (Nexus 6P, Nexus 5X, etc). I haven't seen any commits on GitHub about it though (although I haven't been keeping that close attention), so I don't know if it's been fixed.
I did find the culprit though: it's system.prop. With that file removed from /magisk/audmodlib my device booted up just fine.
Click to expand...
Click to collapse
I will remove it with next release. Thank you man. This **** only started happening with 11.6. this was the reason Atmos was boot looping as well so I removed system.prop in Atmos.
Can you do me a favor and remove a few lines to see if it's just the specific lines? I think that certain lines don't play nice with your phone.
Remove the first part, low power audio tweaks, reboot and see if it works. If it doesn't then that's the culprit. If not then remove the first two on the other audio tweaks.

Seyaru said:
If you wanna try this is my module for Nexus phones. I use this in my Nexus 5X Stock and PureNexus
https://www.androidfilehost.com/?fid=529152257862713260
Sry ahrion for use your thread
Click to expand...
Click to collapse
Hi there, thanks for the suggestion. I've tried it already and it didn't work. Asked for drivers to be installed when I opened the app after installing the module and restarting the phone.

kartikb said:
Hi there, thanks for the suggestion. I've tried it already and it didn't work. Asked for drivers to be installed when I opened the app after installing the module and restarting the phone.
Click to expand...
Click to collapse
Enable permissive.
Turn off audiofx

ahrion said:
Enable permissive.
Turn off audiofx
Click to expand...
Click to collapse
I'll try again when I get a chance to. Thanks for the suggestion.

[UPDATED] ViPER4Android FX <2.5.0.5>
v1.1:
- Updated to Audio Modification Library (Magisk) v1.1
This should fix the boot loop issues seen in only Magisk v11.6
Download: Link - Mirror
Previous Changelogs (Unified installer):
HTML:
V1.0:
- Initial release
- Smali edits to automatically enable storage permissions
- Audio Modification Library v1.0 is included
- Unified installer that will install mod for both Magisk and System
- Pixel support included
- Magisk Template v3 support

kartikb said:
Hi, I'm on 11.6. I've tried both modules on their own and they both have caused boot loops unfortunately.
Thanks anyway..
Click to expand...
Click to collapse
Didgeridoohan said:
There has been an issue with vendor mounting in Magisk, but I believe that was for devices with separate vendor partitions (Nexus 6P, Nexus 5X, etc). I haven't seen any commits on GitHub about it though (although I haven't been keeping that close attention), so I don't know if it's been fixed.
I did find the culprit though: it's system.prop. With that file removed from /magisk/audmodlib my device booted up just fine.
Click to expand...
Click to collapse
Try 1.1.

ahrion said:
Try 1.1.
Click to expand...
Click to collapse
Thanks, I'll give it another go and report back.
Update: my phone reboots into Android fine now however it doesn't process audio on phone speaker.

kartikb said:
Thanks, I'll give it another go and report back.
Update: my phone reboots into Android fine now however it doesn't process audio on phone speaker.
Click to expand...
Click to collapse
Flash my deep buffer remover. Look in the magisk forum.

ahrion said:
Flash my deep buffer remover. Look in the magisk forum.
Click to expand...
Click to collapse
Thanks, it all finally works on my Nexus 6P. Now to try on my OnePlus 3..

How to set /system partition into rw?

can someone make me a flashable zip for making my /system partition mounted into RW on boot?
Newbie here Will appreciate every help thanks

ChanSilvers said:
can someone make me a flashable zip for making my /system partition mounted into RW on boot?
Newbie here Will appreciate every help thanks
Click to expand...
Click to collapse
You need to have root and any terminal installed.
Start terminal and type
Code:
su
mount -o rw,remount /system
It will be remounted RW without any zip flashing and rebooting, realtime.

fehhner said:
You need to have root and any terminal installed.
Start terminal and type
Code:
su
mount -o rw,remount /system
It will be remounted RW without any zip flashing and rebooting, realtime.
Click to expand...
Click to collapse
thanks man! ? I tried that but my phone reboots after i entered the command and my phone is rooted ?

Sorry for the dig up but i am also interrested in this.
I am using an app (NFC Card Emularo) which requires access to /vendor/etc/libnfc-nxp.conf but cannot access it -> the partition is reported to be "read only" by the app. I was able to use the mount command but i am not sure it changes anything since the partition doesnt seem to be writable anyway.
My rig : OnePlus 3T / Oreo (Resurrection Remix OS) / Magisk 16 (also tried 16.2)

Error on remount /system
/system permission can't get full permission

Hi I am using the same app and facing the same problem you have. I have a moto Z 2016 and using the app well, on moto Z2 ,the same problem as you are having. I tried to create file in the dest folder where the app need to modifiy file and success. Still digging into that.

Has anyone been able to solve this? I too use NFC Card Emulator and it's been working fine for a while but then I got the same problem. I don't know what caused it, either an update to the app, LineageOS, Magisk or TWRP. I'm using a OnePlus 5T.

Since Magisk is mounting it's systemless mask over /system and /vendor, directly modifying/mounting these as rw can be an issue...
If you're not using any Magisk modules, you should be able to make it work by just enabling Core Only Mode in the Manager settings.
Otherwise, I would try by taking whatever file it is that the app is trying to modify and make a Magisk module out of it. This way the app should have full write access to the file, and you'll have the benefit of keeping your system untouched.

Didgeridoohan said:
Since Magisk is mounting it's systemless mask over /system and /vendor, directly modifying/mounting these as rw can be an issue...
If you're not using any Magisk modules, you should be able to make it work by just enabling Core Only Mode in the Manager settings.
Otherwise, I would try by taking whatever file it is that the app is trying to modify and make a Magisk module out of it. This way the app should have full write access to the file, and you'll have the benefit of keeping your system untouched.
Click to expand...
Click to collapse
There is an option to generate a Magisk module from the app and that's actually what I used until things broke. After some testing, going back to the March 5 build of LineageOS 15.1 and getting version 3.0.9 of NFC emulator from Aptoide made it work again, but any version 3.1.0 or up doesn't and 3.0.9 does not work on latest LineageOS (March 26 because f that April fools crap). I also tried all the latest LineageOS/TWRP/NFC Emulator on my old Nexus 6P and there, everything works as expected.
So what I get from this is that the fault is either in LineageOS or the app and it's device specific.

An update to this. LineageOS version does not matter as I was able to get NFC Card Emulator version 3.0.9 running on the latest LineageOS. If you download version 3.0.9 from Aptoide it will work once and then stop working, later versions won't work at all. So the best current solution is to use version 3.0.9 of the app and on each reboot after the first install, clear data for the app and it will work again.

Limero said:
An update to this. LineageOS version does not matter as I was able to get NFC Card Emulator version 3.0.9 running on the latest LineageOS. If you download version 3.0.9 from Aptoide it will work once and then stop working, later versions won't work at all. So the best current solution is to use version 3.0.9 of the app and on each reboot after the first install, clear data for the app and it will work again.
Click to expand...
Click to collapse
I can confirm this.
I was having problems with the lastest version of NFC Card Emulator, so I downloaded and installed version 3.0.9 and everything works fine.
Thanks for the tip!

same problems.
I have xiaomi with miui10 beta and magisk with a module installed.
The nfc say to me that the vendor partition is read only and I must reboot the boot everytime

Aight! I think I've found a solution!
DAVIZINHO said:
same problems.
I have xiaomi with miui10 beta and magisk with a module installed.
The nfc say to me that the vendor partition is read only and I must reboot the boot everytime
Click to expand...
Click to collapse
I'm using MI6 with all in one magisk module enabling camera2 api and some other stuff.
Today morning I f**up my phone trying to solve this problem and found a solution, by accident.
Here it is:
Don't install magisk module mentioned above

szaman8666 said:
I'm using MI6 with all in one magisk module enabling camera2 api and some other stuff.
Today morning I f**up my phone trying to solve this problem and found a solution, by accident.
Here it is:
Don't install magisk module mentioned above
Click to expand...
Click to collapse
The problem in my case is that i need the module "magiskhide props config" for pass the safety check.
If i uninstall this module, maybe not works?
I dont know if i can uninstall the module and work, i will try

DAVIZINHO said:
The problem in my case is that i need the module "magiskhide props config" for pass the safety check.
If i uninstall this module, maybe not works?
I dont know if i can uninstall the module and work, i will try
Click to expand...
Click to collapse
Checked the module You've mentioned, Nfc Card Emulator works fine but it may depend on Miui ROM, mine is 8.5.8 beta.

szaman8666 said:
Checked the module You've mentioned, Nfc Card Emulator works fine but it may depend on Miui ROM, mine is 8.5.8 beta.
Click to expand...
Click to collapse
I need this module, if I uninstall not works the safetynet check.
And with this module, nfc card emulator give me the error I use miui 10 beta

Didgeridoohan said:
Since Magisk is mounting it's systemless mask over /system and /vendor, directly modifying/mounting these as rw can be an issue...
If you're not using any Magisk modules, you should be able to make it work by just enabling Core Only Mode in the Manager settings.
Otherwise, I would try by taking whatever file it is that the app is trying to modify and make a Magisk module out of it. This way the app should have full write access to the file, and you'll have the benefit of keeping your system untouched.
Click to expand...
Click to collapse
In theory, if I temporarily disable all of my modules and enable Core Only Mode, would I be able to access the system as RW?

rodken said:
In theory, if I temporarily disable all of my modules and enable Core Only Mode, would I be able to access the system as RW?
Click to expand...
Click to collapse
That is a two and a half year old post you're quoting. A lot have happened in that time...
Core only mode is being removed from Magisk and there are plenty of devices that have permanently ro partitions.
https://www.didgeridoohan.com/magisk/Magisk#hn_Cant_edit_system_files
So the answer to your question would be a definite maybe.

Didgeridoohan said:
That is a two and a half year old post you're quoting. A lot have happened in that time...
Core only mode is being removed from Magisk and there are plenty of devices that have permanently ro partitions.
https://www.didgeridoohan.com/magisk/Magisk#hn_Cant_edit_system_files
So the answer to your question would be a definite maybe.
Click to expand...
Click to collapse
im on android 10 DirtyUnicorns and i want to completely replace the media folder with my own mod. how can i do this? im not able to do it on my pixel 3 yet i just did it on my pixel 2 xl running the same ROM.

Hola yo lo único que quiero es montar sistema como lecturas escritura y ya como puedo hacer android 8

OOS 5.0 : Viper? Dolby ?

So i've seen a lot of viper/viper4arise ( + Dolby + etc ) on many threads...
with maybe way too many versions..
On 7.1.1 default OOS 4, I have mine worked just fine with the one coming from magisk repo.
I've tried the one from Magisk 14.5, processing says Abnormal..
and i can hear crackle sounds in the background when playing music.
Decided not to clutter my magisk modules with install/reinstall, i immediately restore from nandroid backup with clean magisk
( plus one google camera patch module only. )
So have anyone got anything worked on our new OOS 5.0 ?
preferably with Dolby atmos working ? i've never tasted this one on my 1+ device ever...

I also couln't get V4A to work with Magisk so I tried the one that I also have used in 7.1.1 and it seems to be working without any issues for now.
The link : https://androidfilehost.com/?fid=457095661767141554
Just flash it and you're good to go
Best Regards, Talpes

nicknacknuke said:
On 7.1.1 default OOS 4, I have mine worked just fine with the one coming from magisk repo.
I've tried the one from Magisk 14.5, processing says Abnormal..
and i can hear crackle sounds in the background when playing music.
Click to expand...
Click to collapse
If you're talking about the repo on the Magisk Manager, those V4A versions are horribly outdated.
Try the modules by ahrion, downloaded from the thread: https://forum.xda-developers.com/apps/magisk/module-viper4android-fx-2-5-0-5-t3577058
I personally have v2.0 working perfectly with Magisk 14.3. But also needed SELinux permissive module to process properly. Yeah, I know, a of folks are not going to want to set SELinux to permissive. But I'm just sharing what worked for me.
v2.3 wouldn't work properly for me. But one of the devs told me that I should delete all V4A and AML (Audio Mod Libs) and try to install through TWRP. Haven't had a chance to retry it doing all that. If you still have troubles, you can post the TWRP recovery log on the above thread, and they will try to help you out.

Dolby Atmos does not work on Oreo. Do NOT flash, bootloop is a possiblity.

This is how I got V4A working with OOS oreo. I had to set SELinux to permissive.
1. Use Magisk v14.5
2. Install 'Magisk SELinux Permissive Script' module by jman420 from within magisk manager (Modules -> + button -> select file)
https://forum.xda-developers.com/apps/magisk/module-magisk-selinux-permissive-script-t3577549
3. Reboot. Optional - Install 'Display SELinux status' module in magisk
4. Install 'Viper4Android FX for Magisk v14+' v4.0 by ShadySquirrel in magisk manager. You can get it from Magisk repo. (Other V4A modules might work too.)
5. Reboot and voila!

Okay... so far there are 3 alternatives to get this audio mod in Oreo
I will try them and test...
Let's say, this is my attempt to keep track of how to install in oreo..
Thank you guys for all the suggestions ( and warning ! )

talpes said:
I also couln't get V4A to work with Magisk so I tried the one that I also have used in 7.1.1 and it seems to be working without any issues for now.
The link : https://androidfilehost.com/?fid=457095661767141554
Just flash it and you're good to go
Best Regards, Talpes
Click to expand...
Click to collapse
did this version require any SELinux permissive trickery?
Brian

Yes it does but you don't have to install separate apps or magisk modules to archive that. After you flashed the whole thing, open Viper - Settings - Turn on developer mode and disable SELinux. That's it.
Talpes

redpoint73 said:
If you're talking about the repo on the Magisk Manager, those V4A versions are horribly outdated.
Try the modules by ahrion, downloaded from the thread: https://forum.xda-developers.com/apps/magisk/module-viper4android-fx-2-5-0-5-t3577058
I personally have v2.0 working perfectly with Magisk 14.3. But also needed SELinux permissive module to process properly. Yeah, I know, a of folks are not going to want to set SELinux to permissive. But I'm just sharing what worked for me.
v2.3 wouldn't work properly for me. But one of the devs told me that I should delete all V4A and AML (Audio Mod Libs) and try to install through TWRP. Haven't had a chance to retry it doing all that. If you still have troubles, you can post the TWRP recovery log on the above thread, and they will try to help you out.
Click to expand...
Click to collapse
On my attempt with your method, It installs just fine with TWRP, but fail on running.
- Installed just fine with TWRP, no errors. (*)
- Reboot, but i can not find the V4A apps in drawer...
- So i opened up the zip file, extract the APK from v4afx-v2.3.zip/system/app/ViPER4AdnroidFX.apk.
- Install it manually, then it shows up in drawer.
- Everytime i try to run it.. it keeps asking to install drivers. I assume because it wasn't install in /system
( confirm install, reboot, then it asks to install again when i open it ).
So i decide your method does not works well on my device... or i may have missed something in the steps.
( Stock OOS 5.0, Bluspark's 8.54 TWRP, Magisk 14.5 )

fluster84 said:
This is how I got V4A working with OOS oreo. I had to set SELinux to permissive.
1. Use Magisk v14.5
2. Install 'Magisk SELinux Permissive Script' module by jman420 from within magisk manager (Modules -> + button -> select file)
https://forum.xda-developers.com/apps/magisk/module-magisk-selinux-permissive-script-t3577549
3. Reboot. Optional - Install 'Display SELinux status' module in magisk
4. Install 'Viper4Android FX for Magisk v14+' v4.0 by ShadySquirrel in magisk manager. You can get it from Magisk repo. (Other V4A modules might work too.)
5. Reboot and voila!
Click to expand...
Click to collapse
Your method works OK on my device :good:
so we are only limited to v4A ? no Arise, or Dolby atmos ?
i see some OP3T users saying they got it working on their device with Oreo ..

talpes said:
I also couln't get V4A to work with Magisk so I tried the one that I also have used in 7.1.1 and it seems to be working without any issues for now.
The link : https://androidfilehost.com/?fid=457095661767141554
Just flash it and you're good to go
Best Regards, Talpes
Click to expand...
Click to collapse
It said aroma, i'm on stock ROM.. is it safe ?
I will take nandroid backup and try it...
EDIT:
My mistake for not understanding aroma installer.
Tried your method, only install v4a 2.5, and DD Plus..
No errors, when playing music, V4A says abnormal. Second tries, i can not even get the Driver Status to popup.
Dolby Digital seems to work, but it quit everytime i changed the mode, but sound does noticably change.
*rolling back to nandroid backup*

nicknacknuke said:
On my attempt with your method, It installs just fine with TWRP, but fail on running.
- Installed just fine with TWRP, no errors. (*)
- Reboot, but i can not find the V4A apps in drawer...
- So i opened up the zip file, extract the APK from v4afx-v2.3.zip/system/app/ViPER4AdnroidFX.apk.
- Install it manually, then it shows up in drawer.
- Everytime i try to run it.. it keeps asking to install drivers. I assume because it wasn't install in /system
( confirm install, reboot, then it asks to install again when i open it ).
So i decide your method does not works well on my device... or i may have missed something in the steps.
( Stock OOS 5.0, Bluspark's 8.54 TWRP, Magisk 14.5 )
Click to expand...
Click to collapse
You tried ahrion's module, v2.0 like I said (you listed all other version number details but that one)? Newer ones don't work for me; I tried 2.3 and 2.4, and same error you have - no V4A app in app tray.
Also, I'm on Magisk 14.3 (as mentioned) so another variable there.

redpoint73 said:
You tried ahrion's module, v2.0 like I said (you listed all other version number details but that one)? Newer ones don't work for me; I tried 2.3 and 2.4, and same error you have - no V4A app in app tray.
Also, I'm on Magisk 14.3 (as mentioned) so another variable there.
Click to expand...
Click to collapse
Could you upload v2.0?

redpoint73 said:
You tried ahrion's module, v2.0 like I said (you listed all other version number details but that one)? Newer ones don't work for me; I tried 2.3 and 2.4, and same error you have - no V4A app in app tray.
Also, I'm on Magisk 14.3 (as mentioned) so another variable there.
Click to expand...
Click to collapse
my bad for not paying attention
but i'm a bit reluctant to downgrade my magisk
i've managed to get mine working as per Post #5,
i saw there's a new version just came out from ahrion ( v4afx-v2.4.zip , 11/30/2017 ).
I might gonna give it a try also with magisk 14.5...

Trying to install Viper4Android, driver install fails (via magisk)

I've tried installing the driver multiple times and can't seem to make it work at all. The only method I've not been able to accomplish is renaming audio_effects.conf to audio_effects.conf.bak as has been recommended for other phones. For some reason, this file will not rename.
it would seem the file is set to be unwritable (I'm not familiar with linux permissions like this, so maybe that can be fixed somehow?). At the very least, Solid Explorer isn't able to do the job, and can't change the rw perms either, as the operation just fails. (I have got selinuxmodechanger changed to permissive and after reboot, but no change here either)
Any other ideas?

Well, for anyone else wanting to know how to make this work, follow this guide here: https://thedroidarena.com/install-viper4android-android-10-q/
Don't use the magisk module for V4A, it doesn't work.
Works great for me now!

I'm using it it works perfect but you have to use the new version not the older one
Sent from my ASUS_I003DD using Tapatalk

Matakor said:
Well, for anyone else wanting to know how to make this work, follow this guide here: https://thedroidarena.com/install-viper4android-android-10-q/
Don't use the magisk module for V4A, it doesn't work.
Works great for me now!
Click to expand...
Click to collapse
I followed the instructions above, but it doesn't work.

Matakor said:
Well, for anyone else wanting to know how to make this work, follow this guide here: https://thedroidarena.com/install-viper4android-android-10-q/
Don't use the magisk module for V4A, it doesn't work.
Works great for me now!
Click to expand...
Click to collapse
Do you still have that apk lying around? XDA Labs does not appear to be working ATM.

bencozzy said:
JamesDSP works
Click to expand...
Click to collapse
I saw that, didn't really know what it did. I'll check it out.

Nothing in JamesDSP is doing anything for me on Speakers, Headphones, or Bluetooth. I think that this may beacause of my failed install of V4A rootless (might work if I had the APK?). Any ideas if this is the problem? If It is, do you know how I might uninstall V4A?

If rooted, try installing latest V4A directly from here (https://labs.xda-developers.com/store/app/com.pittvandewitt.viperfx) rather than via Magisk.
I prefer older V4A versions, having tried above.
My preferred V4A is 2.5.0.5 (found in App folder in following .zip from here: https://androidfilehost.com/?fid=673368273298920860)
1. Ensure on latest BusyBox.
2. Install latest V4A from Magisk & download driver, device will auto-restart.
3. Uninstall this latest V4A (don't delete data or cache).
4. Install V4A 2.5.0.5 .apk from above link. Don't open app yet.
5. From Magisk, install Audio Modification Library (choose relevant options). Restart device.
6. Additionally, Magisk install Audio Compatibility Patch. Restart device.
7. Ensure V4A settings FX compatible mode option = Normal.
(Don't optmise V4A in battery settings).
Noticeable improvement in speaker volume (I don't play over BT or headphones, so cannot comment).

elmor0 said:
If rooted, try installing latest V4A directly from here (https://labs.xda-developers.com/store/app/com.pittvandewitt.viperfx) rather than via Magisk.
I prefer older V4A versions, having tried above.
My preferred V4A is 2.5.0.5 (found in App folder in following .zip from here: https://androidfilehost.com/?fid=673368273298920860)
1. Install latest V4A from Magisk & download driver, device will auto-restart.
2. Uninstall this latest V4A (don't delete data or cache).
3. Install V4A 2.5.0.5 .apk from above link. Don't open app yet.
4. From Magisk, install Busybox & Audio Modification Library (choose relevant options). Restart device.
5. Additionally, Magisk install Audio Compatibility Patch. Restart device.
6. Ensure V4A settings FX compatible mode option = Normal.
Noticeable improvement in speaker volume (I don't play over BT or headphones, so cannot comment).
Click to expand...
Click to collapse
I uninstalled everythingg I had installed up to that point (everything I could at least), and followed the instructions step by step. Still getting abnormal in the V4A app (at least the app looks cooler now : P). I really don't know what is going on at this point. I might just reset the whole phone and follow your instructions again. I will report back when I get around to that.

Ok, I decided to play around a little before trying a reset; and I installed Viper 4 Android legacy with the APK from the zip you gave me, and it now says audio format supported! Yay! It just says "Processing: no" now. I have a feeling that I have something setup wrong. Any ideas?
Edit: Grammer

You managed to install driver v.2.5.0.5 or latest v4a?
Processing should change to "Yes" whilst audio is playing (music player/ YouTube/ system sounds etc).
Streaming music can be hit & miss; set up Audio Compatibility Patch correctly (via Magisk).

elmor0 said:
You managed to install driver v.2.5.0.5 or latest v4a?
Processing should change to "Yes" whilst audio is playing (music player/ YouTube/ system sounds etc).
Streaming music can be hit & miss; set up Audio Compatibility Patch correctly (via Magisk).
Click to expand...
Click to collapse
I installed driver version 2.5.0.4 with the APK you pointed me towards in the .zip/viperfx/app folder.
I will reinstall the audio conpatibily patch. What options should I choose in the patch?
Edit: I did not install the driver *with* the APK, but alongside it. I installed the driver via ViperFX Legacy in Magisk.

Try the ACP if V4A not working for streaming music apps.
I selected following:
- Skip audio_policy patching? = NO
- Skip notification_helper remover? = YES
- Skip usb policy patching for usb dacs? = NO
- Use lib workaround? = NO

Error-404-Go-Home said:
Edit: I did not install the driver *with* the APK, but alongside it. I installed the driver via ViperFX Legacy in Magisk.
Click to expand...
Click to collapse
That's fine, as long as V4A driver is enabled/ status normal/ format supported/ and it is processing during audio play.

elmor0 said:
That's fine, as long as V4A driver is enabled/ status normal/ format supported/ and it is processing during audio play.
Click to expand...
Click to collapse
It still isn't processing audio : (. I have tried resetting and following your instructions again. The only way I am able to get it to stop displaying "Status: Abnormal" is by installing Viper4Android FX Legacy in the new driver mode with the user app, then installing the Audio Modification and compatibility patch, then restarting and installing the APK you gave me. Even with all that, it will not recognize audio being played (it displays "Processing: No" when audio is very clearly playing and I have effects enabled). I am now considering switching to LineageOS (I would be there already if it wasn't for the fingerprint sensor driver being broken).
Edit: Do you think switching kernels would change anything?
Edit 2: I noticed a toast notification from V4A on startup saying "A running program has requested Android to disable audio effects, so V4A will be temporarily disabled."
I am thinking that maybe the stock Dirac audio processing might be interfering with V4A somehow. Is there anyway to get Viper to ignore requests to disable?

Well, Lineage didn't fix anything (No matter what I did, V4A would not stop displaying abnormal). Took me a little while to get back to stock, but the latest version of V4A is working, but only for the first 30 seconds after reboot before giving me the previously mentioned toast notification. I have removed all apps that are even remotely audio processing related, but still have this problem. Anybody else had something similar? If you did, how did you fix it?
(Also, special thanks to elmor0 for all of your help getting me this far I'm so close)
Edit: Holy shiz it's working! I used the method described in my previous post, but with the added step of uninstalling and reinstalling audio modification library after the last reboot. Again thank you all for your help! And I really hope this helps someone!

Error-404-Go-Home said:
Edit: Holy shiz it's working! I used the method described in my previous post, but with the added step of uninstalling and reinstalling audio modification library after the last reboot. Again thank you all for your help! And I really hope this helps someone!
Click to expand...
Click to collapse
hi
I'm having the same problem for months now
I hear it needs SE Linux to be permissive for V4A to work properly
I had no success on getting that SE Linux to turn Permissive unfortunately
long story short , I found myself here
can you please give me a step by step on how you got V4A to work , that is off course if its still working for you man
I'm at the end of my rope here , any guidance would appreciated ,
Thanx

JimmyMX said:
hi
I'm having the same problem for months now
I hear it needs SE Linux to be permissive for V4A to work properly
I had no success on getting that SE Linux to turn Permissive unfortunately
long story short , I found myself here
can you please give me a step by step on how you got V4A to work , that is off course if its still working for you man
I'm at the end of my rope here , any guidance would appreciated ,
Thanx
Click to expand...
Click to collapse
I ended up refllashing with Lineage and installing this: https://forum.xda-developers.com/t/app-fix-100-working-viper4android-for-android-11-devices.4213647/
That version has worked flawlessly for me for Android 10 and 11.
Good luck!