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Help With Viper4audio: Driver install failed

I've got busybox installed properly, it's Stericson's, I've checked if it's working and it is, I have given root permission to V4A and I have plenty of space for the drivers to be installed. I'm on a rooted h959 15e image, I'm not really willing to revert back to previous software versions, and I'm stuck with this problem. The exact message I get is "Driver install failed: The busybox installation found on your device does not work. This usually means you installed a wrong or broken busybox. V4A needs Stericson's busybox to work. If you are sure you installed busybox properly, then please confirm your device has been completely rooted". But it is rooted, I can access all types of root-only things like xposed and root booster. SELinuxModeChanger is set to permissive, I have tried with both V4A apps from the DXA thread and from the (not the FX one) one in Google Play, and I have already tried uninstalling and installing everything, and I have also tried reflashing my rooted_system.img countless times. So root is working, busybox is working, SELinuxModeChanger is properly set up, why isn't it working? Also I noticed something, when I reboot my phone, SELinuxModeChanger changes the SELinux mode back to enforcing, but if I turn on the option to show a notification after the mode changes, the notification IS showed, so it must mean it's working, right? I have tried before without poweramp and dolby atmos, but as of now I'm using both. I don't even know if V4A will work with Atmos and Poweramp (Atmos and Poweramp do work together, though), but I just need to try it, even if it means uninstalling atmos. So I'm completely out of options. The only thing that I can think of is if there's a way to manually install the drivers (latest updated/updatable super audio quality ones), but I don't know if that's possible. So anyway, can anyone help me with this?

You should flash a zip from this site: http://forum.xda-developers.com/nexus-6/themes-apps/viper4android-t2952137. I used this: http://forum.xda-developers.com/attachment.php?attachmentid=3667403&d=1456929089, and it works. Of course, flashfire v0.24 is required.

jst8 said:
You should flash a zip from this site: http://forum.xda-developers.com/nexus-6/themes-apps/viper4android-t2952137. I used this: http://forum.xda-developers.com/attachment.php?attachmentid=3667403&d=1456929089, and it works. Of course, flashfire v0.24 is required.
Click to expand...
Click to collapse
I'm flashing the zip file viper|atmos 5.5 sony beats edition with flashfire 0.50, and nothing's happening. Again, SELinux mode is permissive and busybox is installed, but atmos app and viper app won't show up, and when installing the app from the playstore, it says the driver is not installed. Help, please?

Iron_Overheat said:
I'm flashing the zip file viper|atmos 5.5 sony beats edition with flashfire 0.50, and nothing's happening. Again, SELinux mode is permissive and busybox is installed, but atmos app and viper app won't show up, and when installing the app from the playstore, it says the driver is not installed. Help, please?
Click to expand...
Click to collapse
1. First, install ViPER4Android apk from the official site: http://forum.xda-developers.com/showthread.php?t=2191223. You can choose between the old (v2.3.4.0) and new (v2.4.0.1) version.
2. Then flash a zip from this site: http://forum.xda-developers.com/nexus-6/themes-apps/viper4android-t2952137. I used "ViPERAudio 5.4 Stock.zip" (compatible with V4A v2.4.0.1). You can also choose "ViPERAudio 4.7.1 Stock.zip", if you have V4A v2.3.4.0 installed. I didn't try other mods (such as "viper|atmos 5.5 sony beats edition"), so I don't know if they work.
3. For flashing, you have to use FlashFire v0.24, other versions don't work with the device. Link: http://flashfireapk.com/flashfire-0.24.apk.
* Also, you don't have to change SELinux.

Thanks

jst8 said:
1. First, install ViPER4Android apk from the official site: http://forum.xda-developers.com/showthread.php?t=2191223. You can choose between the old (v2.3.4.0) and new (v2.4.0.1) version.
2. Then flash a zip from this site: http://forum.xda-developers.com/nexus-6/themes-apps/viper4android-t2952137. I used "ViPERAudio 5.4 Stock.zip" (compatible with V4A v2.4.0.1). You can also choose "ViPERAudio 4.7.1 Stock.zip", if you have V4A v2.3.4.0 installed. I didn't try other mods (such as "viper|atmos 5.5 sony beats edition"), so I don't know if they work.
3. For flashing, you have to use FlashFire v0.24, other versions don't work with the device. Link: http://flashfireapk.com/flashfire-0.24.apk.
* Also, you don't have to change SELinux.
Click to expand...
Click to collapse
Thank you very much, friend, I'm gonna try your method right now. Just one question, why doesn't flashfire 0.50 work with the g flex 2? I flashed Xposed with it and it worked. Isn't 0.24 an older version?

How do you test the benefits?

Iron_Overheat said:
Thank you very much, friend, I'm gonna try your method right now. Just one question, why doesn't flashfire 0.50 work with the g flex 2? I flashed Xposed with it and it worked. Isn't 0.24 an older version?
Click to expand...
Click to collapse
Actually, I don't know. I've read somewhere that v0.24 is the only working version for our flex 2. I didn't want to brick my device, so I used v0.24. I've had no problems with it so far.

soosoolhastam said:
How do you test the benefits?
Click to expand...
Click to collapse
I'm just going to play my flacs and listen to them while tuning v4a to my liking.

jst8 said:
Actually, I don't know. I've read somewhere that v0.24 is the only working version for our flex 2. I didn't want to brick my device, so I used v0.24. I've had no problems with it so far.
Click to expand...
Click to collapse
I've tried with version 0.24 and it didn't work either. I'm gonna test the g flex 2 flash mod (the one with g4 tweaks and etc) with flashfire 0.24, since it says to use that version and it didn't work flashing it with 0.50, and if it still doesn't work for me, I'll revert back to 0.50, since it worked flashing dolby atmos (seperate from viper4audio, but the viper4audio-only zip file didn't flash). I fixed my problem of drivers not installing, so I'll just install atmos again and install the v4a drivers through the app. But thank you all for your help, really . If I menage to get all the mods I have working, I'll make a thread so that H959 rooted 15e image users can enjoy the best experience in their G flex 2.

maybe you never get viper4 to work in GF2...i did it many times with diferent methods and never never get it to work...even use the flashfire 0.24 (the only working to install zips on GF2) you never get a driver to work!
i recomend to you install Dolby Atmos see Apps section in this forum of GF2...the Dolby Atmos works like a charm and do the good job as Viper4.
(i am not sure but because of architeture of the SD810 Viper4 the latest version never will work on our device!)

That's strange... I'm on H955 v15c, V4A 2.4.0.1 with "ViPERAudio 5.4 Stock.zip" installed using FlashFire v0.24.
Everything works.

copy2050 said:
maybe you never get viper4 to work in GF2...i did it many times with diferent methods and never never get it to work...even use the flashfire 0.24 (the only working to install zips on GF2) you never get a driver to work!
i recomend to you install Dolby Atmos see Apps section in this forum of GF2...the Dolby Atmos works like a charm and do the good job as Viper4.
(i am not sure but because of architeture of the SD810 Viper4 the latest version never will work on our device!)
Click to expand...
Click to collapse
Everyone... I... I... I FINALLY GOT TO GET ALL THE MODS I WANTED TO WORK!! *dances frenetically* :laugh::laugh::laugh::victory: I'm gonna make a thread so that every user with a h959 G Flex2 can enjoy this tuned experience I achieved! Thank you all for your help! If you guys are interested in knowing what mods I managed to make work on the latest software version of the G Flex2 (that is, on the h959 ones), keep an eye on the thread I'm about to make! *celebrates into oblivion* (erm... this is embarassing... I'm a newbie here and... um... how exactly do I "close" or delete this thread? I mean, my problem is solved so... what do I do?

Install busybox from google play, set selinux to permissive and You guys have to uncheck an option on supersu app. Option named "namespace separation". After uncheck that option reboot phone and try to install viper driver again.

Viper4android

AUDIOPHILES GET IN HERE!
One of the many reasons why rooting is still Popular..
NOTE(Old):
Your phone's Dolby Atmos would not be functional (but its dual speakers still function well) in other words, the Dolby Atmos in the settings would be turned "Off" only.
Note(New): I had an error installing the driver but itndoesn cause any problems, I backed up the audio config file. Deleted, restarted and installed the driver from the app. It was successful. I tried bringing back a copy of audio conf. And jollah I made the built in dolby atmos system of Nokia 6 work with the Viper4Androi and I swear, the phone is like a mini stereo with awesome quality. Just a few tweaks and you're great.
For those who doesn't know what's ViPER4Android:
As we know that the vipe4android is one of the best android voice enhancer app. Not just voice/music enhancer but the best thing you can do by viper4android is, improve music quality. This app works on same principal and applicable to both kinds of music as well as video, and also works to games, almost every app on your phone!
How to Install ViPER4Android on Nougat
Make sure you’re rooted and have TWRP recovery installed on your device.
If not yet, follow Hikari Calyx's guide for rooting your Nokia 6 https://forum.xda-developers.com/nokia-6/how-to/guide-how-to-flash-custom-recovery-root-t3702354
Just tested it on my Nokia 6 TA-1021 (March 30 +8:00)
1. Download the ViPER4Android_2.5.0.5_guitardedhero.zip file from the download button above and transfer it your device’ internal storage.
2. Boot into TWRP recovery and install/flash the ViPER4Android_2.5.0.5_guitardedhero.zip file to your device.
Reboot phone. (If you can't go to recovery mode just like me, use "#Rashr" app from playstore it has a function that can reboot you to recovery mode)
3. Download/install a root file explorer app (we recommend ES File Explorer/Classic root browser).
└ On ES File Explorer, swipe-in from left and turn on Root explorer feature. And don’t forget to grant root access when asked.
4. Now using your root explorer app, go to /vendor/etc/ directory on the device and rename audio_effects.conf to audio_effects.conf.bak.
5. Open ViPER4Android FX app on your phone (it installed when you flashed the zip file in step 3 above).
You’ll get a notification to install V4A driver. Select YES.
It’ll take some time to install V4A driver, and while doing so it might even look like it’s stuck but you don’t worry. It’s doing its job and will finish soon.
└ If Android gives an error that the app has stuck/stopped. Be sure to select the wait option, don’t force close it.
Once you get the Driver installed message on screen, reboot your device.
http://downloadmirror.co/2zYA/ViPER4Android_2.5.0.5_guitardedhero.zip
Is there any audiophiles here?
I would like to know if anyone has safely installed Viper4android to Nokia6
And if it's causing any problems with its dolby atmos system..
I wanted to know because tbh, the HMD global didn't make efforts for a nokia music app and it comes without a preinstalled equalizer. While Samsung even has their SoundAssistant and SoundAlive equalizer options. 3rd party app sucks. So this is the best option I only see, the mother of all equalizers for music.

I use ARISE Sound mod with VIPER4ARISE and it is working great. Only Dolby Atmos will not work with that, if you install the arise Dolby you will get a bootloop.

Wait, I don't understand... What's the difference between Vioer4android and Viper4ARISE and Arise itself...
And which of those causes bootloop, which ones are safe to install through twrp?

frince9000 said:
Wait, I don't understand... What's the difference between Vioer4android and Viper4ARISE and Arise itself...
And which of those causes bootloop, which ones are safe to install through twrp?
Click to expand...
Click to collapse
Viper4android is the original audio mod you were asking about. Some guys from created a collection of different mods and apps and made them work as best as they can - this is ARISE. They included Viper4android and modified the configs so it fits into arise - this is VIPER4ARISE. The main difference for the Nougat user is that the installation is simpler. You just place a text file on the internal storage which tells this twrp zip what to do and Flash through twrp - done. This means that you can easily install a variety of sound software with only minimal problems.
If you install arise however, the pre-installed Dolby from Nokia breaks. If you install Dolby Atmos from arise, you will end up with a bootloop.
I hope this was understandable.

How do I install Viper4arise.. I can't seem to be able to find links in google. Also, the files :/ if it doesn't bother you that is...

Also, have you tried installing Viper4android? Does it also cause the dolby atmos (speakers) of nokia 6 to malfunction? Or any side effects it might cause? I want the dolby atmos speaker function to remain while having installed Viper4android.

frince9000 said:
Also, have you tried installing Viper4android? Does it also cause the dolby atmos (speakers) of nokia 6 to malfunction? Or any side effects it might cause? I want the dolby atmos speaker function to remain while having installed Viper4android.
Click to expand...
Click to collapse
The speakers remain perfectly functional. But DOLBY ATMOS WILL NOT WORK after installing viper through arise at least. I have never installed stock viper so I cannot provide information about this.

Updated thread*

Cant get Viper to work properly

Hey guys,
since i got my Oneplus 6, i couldnt get viper to work quite right. Most of the time its just shows "Processing: No" till i restart it and after like a hour or device switch it turns off.
I tried:
Copying the Audioeffects.conf from system/etc to vendor/etc
Using Magisk Audio Compability Module
Using Alternate Magisk V4A Module
Using a Magisk Rom with Build-In V4a (currently xXx 2.8)
Disabling Dirac and Services
but nothing worked
thanks for your help

i had the same but then i tried to use the other viper release from magisk and it worked. there is this one called hifi and fx

Try exiting the viper app with the 3 dots top right hand corner. That is what worked for me

dgunn said:
Try exiting the viper app with the 3 dots top right hand corner. That is what worked for me
Click to expand...
Click to collapse
that works for like 10 mins and then it gets killed

byReqz said:
that works for like 10 mins and then it gets killed
Click to expand...
Click to collapse
Sounds to me like you need to disable the battery optimizations for Viper. It's almost as if your phone is detecting High battery drain and shuts down the app

dgunn said:
Sounds to me like you need to disable the battery optimizations for Viper. It's almost as if your phone is detecting High battery drain and shuts down the app
Click to expand...
Click to collapse
yeah thats what i thought too, i zried whitelisting it and installing it as system app (+ magisk module) but it didnt seem to work.
I removed the one from my rom and tried the magisk repo version again and somehow its working till now

byReqz said:
yeah thats what i thought too, i zried whitelisting it and installing it as system app (+ magisk module) but it didnt seem to work.
I removed the one from my rom and tried the magisk repo version again and somehow its working till now
Click to expand...
Click to collapse
I was unaware that you were using the magisk module. I could not get that one to work either

dgunn said:
I was unaware that you were using the magisk module. I could not get that one to work either
Click to expand...
Click to collapse
the normal one doesnt work with viper doewsnt it?

Try just exiting the viper app then reopening it. I had this problem before and it just randomly went away.

TheNetwork said:
Try just exiting the viper app then reopening it. I had this problem before and it just randomly went away.
Click to expand...
Click to collapse
it only works for a few mins that way

I'm using the Android p beta and i don't have the problems with viper as i did with oxygen os 5. it's always processing for my headphones, either plugged in or Bluetooth. the only exception is sometimes after receiving a call while listening to music, after the call is over and my music resumes, viper is no longer processing. not every time though. i used the latest magisk and the viper module in the screenshot.
i also didn't make any changes to conf files, just installed through magisk download. rebooted, opened viper fx, gave it storage permissions and turned it on.

Had the same problem, but was able to resolve it by choosing the legacy (non-material) interface when installing the Magisk module. I still flashed the full module and selected the latest version, just not the material interface. It may have been something else, but I've updated my ROM (HavocOS) several times and even done a couple full fastboot stock resets and the issue is yet to resurface.

TuxRuffian said:
Had the same problem, but was able to resolve it by choosing the legacy (non-material) interface when installing the Magisk module. I still flashed the full module and selected the latest version, just not the material interface. It may have been something else, but I've updated my ROM (HavocOS) several times and even done a couple full fastboot stock resets and the issue is yet to resurface.
Click to expand...
Click to collapse
as i said, idk why but its working now.and im on material now

byReqz said:
Hey guys,
since i got my Oneplus 6, i couldnt get viper to work quite right. Most of the time its just shows "Processing: No" till i restart it and after like a hour or device switch it turns off.
I tried:
Copying the Audioeffects.conf from system/etc to vendor/etc
Using Magisk Audio Compability Module
Using Alternate Magisk V4A Module
Using a Magisk Rom with Build-In V4a (currently xXx 2.8)
Disabling Dirac and Services
but nothing worked
thanks for your help
Click to expand...
Click to collapse
I've had this problem on an Samsung S7 Edge, S8 Plus, and now, a Oneplus 6.
Everything appears to look good on Driver Status, except "Processing:No" and it's audibly not on.
What's worked for me in this specific situation is replacing the configuration file "audio_effects.conf" in /system/vendor/etc with another configuration file that I found in another XDA thread. So here's the concrete steps:
1. Install the viper4android FX module from Magisk manager that has four devs (v1.7 as i write this) and reboot. I don't know if this method will work with other v4a modules. Note that Processing will work temporarily, but likely won't survive a reboot.
2. Download this file (files_for_v4a.zip) from here:
https://forum.xda-developers.com/ga...laxy-s8-s8-t3596933/post72049061#post72049061
3. Unzip files_for_v4a.zip and make note where it extracted. (You'll need one of its contents, audio_effects.conf, later)
4. Using a file explorer with root capability, go to the following directory:
/system/vendor/etc
5. Copy the existing "audio_effects.conf" to another directory, for example /download, to use as a backup in case this goes badly
6. Copy the file "audio_effects.conf" that you unzipped earlier to /system/vendor/etc, overwriting the existing file.
7. Reboot and test v4a.
Good luck!
Note: The Pulse feature of a custom NavBar in custom ROMS based on LOS 15.1 will not work if you do the above.
Although I'm just a hack, I modded an "audio_effects.conf" file using commits from the above to work with Pulse. I've tested it on my device (despite my lack of know-how, it seems to work for me and others!), so be aware of this if you download the following file and use it (by renaming it audio_effects.conf and placing it in /system/vendor/etc):

reaper000 said:
I've had this problem on an Samsung S7 Edge, S8 Plus, and now, a Oneplus 6.
Everything appears to look good on Driver Status, except "Processing:No" and it's audibly not on.
What's worked for me in this specific situation is replacing the configuration file "audio_effects.conf" in /system/vendor/etc with another configuration file that I found in another XDA thread. So here's the concrete steps:
1. Install the viper4android FX module from Magisk manager that has four devs (v1.7 as i write this) and reboot. I don't know if this method will work with other v4a modules. Note that Processing will work temporarily, but likely won't survive a reboot.
2. Download this file (files_for_v4a.zip) from here:
https://forum.xda-developers.com/ga...laxy-s8-s8-t3596933/post72049061#post72049061
3. Unzip files_for_v4a.zip and make note where it extracted. (You'll need one of its contents, audio_effects.conf, later)
4. Using a file explorer with root capability, go to the following directory:
/system/vendor/etc
5. Copy the existing "audio_effects.conf" to another directory, for example /download, to use as a backup in case this goes badly
6. Copy the file "audio_effects.conf" that you unzipped earlier to /system/vendor/etc, overwriting the existing file.
7. Reboot and test v4a.
Good luck!
Note: The Pulse feature of a custom NavBar in custom ROMS based on LOS 15.1 will not work if you do the above.
Although I'm just a hack, I modded an "audio_effects.conf" file using commits from the above to work with Pulse. I've tested it on my device (despite my lack of know-how, it seems to work for me and others!), so be aware of this if you download the following file and use it (by renaming it audio_effects.conf and placing it in /system/vendor/etc):
Click to expand...
Click to collapse
Thanks for your long answer, will be trying the files if this module fails again.
Also im not on a LOS Based Rom, im on OOS and GravityBox

byReqz said:
Thanks for your long answer, will be trying the files if this module fails again.
Also im not on a LOS Based Rom, im on OOS and GravityBox
Click to expand...
Click to collapse
Just seeing if I can help! And I did the same sequence of steps on OOS as well ... But I haven't run gravity box in awhile. Hope it works out for you.

reaper000 said:
Just seeing if I can help! And I did the same sequence of steps on OOS as well ... But I haven't run gravity box in awhile. Hope it works out for you.
Click to expand...
Click to collapse
I tried everything but it still needs a restart to be working sometimes, do you know if i have to disable dirac or something?

byReqz said:
I tried everything but it still needs a restart to be working sometimes, do you know if i have to disable dirac or something?
Click to expand...
Click to collapse
I haven't messed with dirac at all, and v4a still works for me.
Some clarification, please:
Did you uninstall the v4a magisk module that came with xXx and reboot?
Then go to magisk manager and install v4a fx materialized1.7 and follow the rest of the steps outlined in my post?

reaper000 said:
I haven't messed with dirac at all, and v4a still works for me.
Some clarification, please:
Did you uninstall the v4a magisk module that came with xXx and reboot?
Then go to magisk manager and install v4a fx materialized1.7 and follow the rest of the steps outlined in my post?
Click to expand...
Click to collapse
yeah, its 1.7 from magisk repo, disabling dirac seems to help a bit but not everytime

byReqz said:
yeah, its 1.7 from magisk repo, disabling dirac seems to help a bit but not everytime
Click to expand...
Click to collapse
And you replaced the audio_effects.conf file in /system/vendor/etc with the one from the downloaded zip?
(Sorry to belabor the point, but it's not clear to me you tried all that)

[GUIDE] How to Make Audio Mods Work Amazingly Well

I am an audiophile and I make it a point to use audio mods whenever possible. That being said, the audio mods that I've tried and worked amazingly well are Viper4Android and Ainur Sauron, but you will also need Audio Compatibility Patch and Audio Modification Library to make things work so seamlessly.
That being said, I get to see a lot of people complaining about Viper4Android being too buggy in that after every restart, it asks for the driver to be installed again, etc. Well, I have clean flashed/dirty flashed plenty of ROMs now so I can honestly say that my method works.
So, what is my method for installing all of the audio mods I mentioned earlier? Well here are the steps:
1. Install Busybox for Android (in Magisk Repo)
2. Install Audio Compatibility Patch. It now comes with a multi-option installer, so you want to Select NO to the first option then choose Vol + (Patch New Logic). Select NO to the second option and then use Vol - (remove Volume Listener Library). This is done so that your audio won't crackle. You can skip USB Dac if you're not using it and you should choose NO at the last option (library workaround).
3. After Installing ACP with the chosen options, proceed to install Ainur Sauron.
4. Once that is done, install Audio Modification Library. After AML, DO NOT REBOOT YET.
5. Download the Viper4Android 2.7.1 APK here: https://labs.xda-developers.com/store/app/com.pittvandewitt.viperfx . I find this to be the best iteration of the module since it is not buggy at all. Once that is installed, run the application and it will prompt you to install drivers for the first time, choose OK and then allow it to reboot. (Note: after installing this, a Magisk Module will be created automatically)
At this point, all of the audio mods should work in unison. Do not toggle anything else in Viper4Android but the main interface. This means that do not go to the settings and toggle anything. Just configure the audio options as per your liking.
6. Currently, the setup will bork BT audio which means that there is no sound that is going to come off of your BT speakers or headphones. What you need to do to fix this is as follows:
a. Rename "audio_policy_configuration.xml" in "/sbin/.magisk/img/aml/system/vendor/etc/audio" to "audio_policy_configuration.xml.bak".
b. Copy the audio policy configuration xml file from "/sbin/.magisk/img/aml/system/etc" to "/sbin/.magisk/img/aml/system/vendor/etc/audio".
c. Restart the device.
Additional Notes
a. When dirty flashing your custom ROM, allow the modules to recoup itself. In other words, do not touch anything until everything is back to normal (or after 5 minutes from dirty flashing).
b. If you happen to uninstall Ainur Sauron (or Narsil), I find that it usually uninstalls viper4android as well. If that is the case, uninstall Sauron and then click the viper4android app from the drawer and allow it to install drivers again.
c. In some devices, the BT workaround is no longer needed. However, I find that for the Pocophone, the workaround is still required. I guess you just have to test it for yourself if it works right off the bat or not.
d. Audio compatibility patch (remove patch logic) actually enhances the volume and the sound quality of the Poco F1. I cannot test this on other devices since I do not have another phone, but you can try and see if it works for you. (thanks to @Jonas G. Morsch for this).
e. If you are going to try Ainur Narsil, I suggest that you do not install viper4android anymore since it provides a great listening experience right off the bat. You can still install v4a, though if you really want it (The same procedure applies).
f. If you are using a custom ROM that has a built-in "AudioFX" app, you need to freeze it using Titanium Backup or similar apps for Viper4android to work. Thanks to @mikedavo for this tip.
g. If, after following all of the above instructions, and you still experience random driver issues or bugs, I suggest that you do a clean installation of your ROM and do the entire steps again. If it still presents the same error, I suggest that you hop on the Viper4android telegram channel to address your concern so that the dev can fix it.
h. Attached below is a profile converter, so if you're using the old version of Viper4android, you can use the attached file to convert all of your profiles to supported presets.
That's about it! If you have questions, feel free to drop them below. Happy listening!

man just what i needed. thank you very much. will try it later. :good:

Point 6 should be fixed. Possible a failure in Poco firmware or something. Use latest AML from Magisk repo. Also install all modules via magisk manager by now. Seems there is an issue and we are working in it.
Also I would replace Viper with JamesDSP.
JamesDSP future is bright and expect a tone of new **** in future. ?

Work as a charm in MIUI latest... But Bluetooth is working without step 6
Sent from my POCOPHONE F1 using Tapatalk

Hmm, I just make sure to disable and freeze any inbuilt audio equaliser or fx from custom roms before installing viper and have never had a problem with vipers drivers installing or instability in viper. I also, after installing viper, activate enhanced sound at the bottom of the sound menu in settings and choose my headphones in the dropdpwn, mine are mi inear pro. If I happen to forget to do this, I'll get the drivers need installing message from viper.

Use jamesDSP. Better ****. Has even 24-bit support. Viper just 16-bit. Also our viper guys teamed up with James. So expect some new **** soon.

it doesn't work for me at all, viper keeps asking to install driver and reboots the phone.. again and again

efakkawy98 said:
it doesn't work for me at all, viper keeps asking to install driver and reboots the phone.. again and again
Click to expand...
Click to collapse
Same here, i gave up after the tenth try

efakkawy98 said:
it doesn't work for me at all, viper keeps asking to install driver and reboots the phone.. again and again
Click to expand...
Click to collapse
Edit:- This worked perfectly for me even in the Secondary ROM with the following changes. V4A 2.7.0 instead of Latest 2.7.1 probably because I'm using Magisk 18.1 and V4A kept on asking to install driver even after reboot so I had renamed the MusicFX.apk in the System to MusicFX.apk.bak.
@BenParz Thank you very much for the guide.
This trick doesn't work with MultiROM for sure.

Will viper work with a bitrate of over 48k? My headphones us 96k which doesnt work with the buggy v4a i use, but its the only version of v4a that actually works at all for me (will try your way of installing later)

SVR said:
This trick doesn't work with MultiROM for sure.
Click to expand...
Click to collapse
I'm not using MultiROM. I'm on PE latest build

I've created a monster hehe. Ainur Sauron also installed

BenParz, i can't thank you enough for this! the choppy audio after installing Viper was making me crazy.
I'm running Lineage OS 05/18/2019 + nano gaaps
After mess around with this modules i got other way:
1 . Install Audio Compatibility Patch. It now comes with a multi-option installer, so you want to Select NO to the first option then choose Vol + (Patch New Logic). Select NO to the second option and then use Vol - (remove Volume Listener Library). This is done so that your audio won't crackle. You can skip USB Dac if you're not using it and you should choose NO at the last option (library workaround).
2. Download and install Viper4Android 2.7.1 Magisk Module here: https://zackptg5.com/downloads/v4afx_v2.7.1.0.zip .
More info : https://forum.xda-developers.com/android/apps-games/app-viper4android-fx-2-6-0-0-t3774651
3. Fix BT:
a. Rename "audio_policy_configuration.xml" in "/sbin/.magisk/img/acp/system/vendor/etc/audio" to "audio_policy_configuration.xml.bak".
b. Copy the audio policy configuration xml file from "/sbin/.magisk/img/acp/system/etc" to "/sbin/.magisk/img/acp/system/vendor/etc/audio".
4. Go to ViperFx and install drivers, Viper will auto Reboot!
I'm probably cutting some corners here, but i got no problems at all this far.

Jonas G. Morsch said:
BenParz, i can't thank you enough for this! the choppy audio after installing Viper was making me crazy.
I'm running Lineage OS 05/18/2019 + nano gaaps
After mess around with this modules i got other way:
1 . Install Audio Compatibility Patch. It now comes with a multi-option installer, so you want to Select NO to the first option then choose Vol + (Patch New Logic). Select NO to the second option and then use Vol - (remove Volume Listener Library). This is done so that your audio won't crackle. You can skip USB Dac if you're not using it and you should choose NO at the last option (library workaround).
2. Download and install Viper4Android 2.7.1 Magisk Module here: https://zackptg5.com/downloads/v4afx_v2.7.1.0.zip .
More info : https://forum.xda-developers.com/android/apps-games/app-viper4android-fx-2-6-0-0-t3774651
3. Fix BT:
a. Rename "audio_policy_configuration.xml" in "/sbin/.magisk/img/acp/system/vendor/etc/audio" to "audio_policy_configuration.xml.bak".
b. Copy the audio policy configuration xml file from "/sbin/.magisk/img/acp/system/etc" to "/sbin/.magisk/img/acp/system/vendor/etc/audio".
4. Go to ViperFx and install drivers, Viper will auto Reboot!
I'm probably cutting some corners here, but i got no problems at all this far.
Click to expand...
Click to collapse
Have you tried whatsapp voice notes?
Are they making crackling sound when app is minimized or screen is off while playing voice note?

Thanks a lot for such an easy guide.

hugolol said:
Will viper work with a bitrate of over 48k? My headphones us 96k which doesnt work with the buggy v4a i use, but its the only version of v4a that actually works at all for me (will try your way of installing later)
Click to expand...
Click to collapse
Well, you can actually change the Bluetooth bitrate setting in developer options. Doing that allows me to use V4a on my sony BT speaker (which uses LDAC).

slimshouki said:
Have you tried whatsapp voice notes?
Are they making crackling sound when app is minimized or screen is off while playing voice note?
Click to expand...
Click to collapse
Yeah, Whatsapp on Lineage crackles no matter what.
I'm dealing with this problem since my Zenfone 2 with Lineage 14 and no audio mod whatsoever, but never cared too much, because when i rarely listen Whatsapp audio files i do in foreground, and using the earpiece, . I also use telegram for 95+% off my conversations this days.

Hi Again!
After some time of testing, i think i got it how to use Audio Compatibility Patch (1.7.3+) with Lineage OS properly on our device:
Skip audio_policy patching?
- No
Patch flags or remove selections?
- Remove (old logic)
If patched the audio gets worse/lower on speaker/jack.
Would you like to skip notification helper?
- No
Remove notification helper effect or volume listener library?
- Remove volume listener library
Would you like to skip usb policy patching for usb dacs?
- Whatever
Use library workaround?
- No
If used causes bluetooth routing problems.
No Audio Modification Library needed.
After this sequence, my earphones,bluetooth and speaker worked fine with ViperFX 2.7.1, especially the jack, witch was really quieter and muffed before.
Can you guys try it out?

AudioModificationLibrary (AML) has been updated to 2.4. we've also updated unity modules. Everything should work now. Viper, James, Sauron and DTS.
At least on latest MIUI pie betas there should be no Bluetooth bug or anything.
There was a question regarding viper and above 48k.
Viper can just process up to 48. We've released yesterday the new module with DTSultra port. This is capable of up to 96k.

Nemuritor01 said:
AudioModificationLibrary (AML) has been updated to 2.4. we've also updated unity modules. Everything should work now. Viper, James, Sauron and DTS.
At least on latest MIUI pie betas there should be no Bluetooth bug or anything.
There was a question regarding viper and above 48k.
Viper can just process up to 48. We've released yesterday the new module with DTSultra port. This is capable of up to 96k.
Click to expand...
Click to collapse
What about bluetooth on PE and other custom ROMs?

Question Anyone get ViperFX functional on their OP9?

received Buds Z for my OP9 purchase and have very slowly converting to the new phone (rooting, stability and assure privacy issues were addressed) and was very happy with their performance with my rooted OP6 on A11-Pixen OS with ViperFX. Without VIper, the sound is lackluster. even a downloadable EQ makes minimal difference.
Attempting to convert fully to OP9 today and installed viperFX mod form magisk but when I attempt to perform the initial launch to download and install the driver, the phone just reboots without actually getting the driver installed. Im not sure if its a hardware compatibility issue or the fact the OP9 root isnt as full and fleshed out like the one on my OP6. (something about DM verify and/or selinux enforcement? idk, I am pretty lame at the deep understanding of android 11s workings)
I know there are a few other magisk mod for audio listed and more that i could possibly find that arent and add myself via zip installation but even if one ends up working, I will still be aiming for VIperFX as my preferred solution.
If anyone has a solution, plz reply (or whatever possible replacement you've chosen)
PS. I swore the buds z touch controls were suppose to be customizable. anyone else unable to set custom controls for them?

In magisk, install "audio modification library". That should fix the driver issue.
To customize the touch controls, go in Settings, bluetooth and device connections, bluetooth, settings cog next to the buds, headphones. Now you can customize them. Not a lot of options though.
You might need to install the oneplus buds app first.

NotTheGiant said:
In magisk, install "audio modification library". That should fix the driver issue.
To customize the touch controls, go in Settings, bluetooth and device connections, bluetooth, settings cog next to the buds, headphones. Now you can customize them. Not a lot of options though.
You might need to install the oneplus buds app first.
Click to expand...
Click to collapse
i tried that and its the same results. No driver found, it installs, force reboots and loops from there. thank you though.

applyscience said:
i tried that and its the same results. No driver found, it installs, force reboots and loops from there. thank you though.
Click to expand...
Click to collapse
Same issue. Tried ACP as well, just gave up on it and using the inferior built-in Atmos

No, but I did install James DSP and it's working just fine.

@applyscience
After alot of trail and error I finally got ViperFX working on my OP9 !
You must install magisk-permissive-script_v1.2 and audio modification library modules in Magisk and of course the ViperFX

Glad you got it working! I wonder why I didn't need to do that
Hopefully it works for everyone else.

Just use JamesDSP. Same functionality as Viper, and works 100% of the time.

Jg1234 said:
@applyscience
After alot of trail and error I finally got ViperFX working on my OP9 !
You must install magisk-permissive-script_v1.2 and audio modification library modules in Magisk and of course the ViperFX
Click to expand...
Click to collapse
Can you tell me how you got it working in more detail? Because this isn't working for me

Okay it randomly worked for me after installing the BusyBox magisk module, then the Audio compatibility module, then the Audio modification module and then viper. After that the driver installed but did not work. After setting the selinux mode to permissive and switching to legacy mode in viper it worked flawlessly.

Im trying for several hours now, i have tried everthing i found including this Thread
(https://forum.xda-developers.com/t/app-fix-100-working-viper4android-for-android-11-devices.4213647/)
Nothing worked for me anyone any idea, i have allready updatet to the latest OxygenOs (11.2.4.4.LE25BA) Maybe thats why it doesnt work?

Domi04151309 said:
Okay it randomly worked for me after installing the BusyBox magisk module, then the Audio compatibility module, then the Audio modification module and then viper. After that the driver installed but did not work. After setting the selinux mode to permissive and switching to legacy mode in viper it worked flawlessly.
Click to expand...
Click to collapse
Did you reboot between the steps? have you installed any audio changing application before?

I'm using james dsp. It does the same and works without problems

noname122414 said:
I'm using james dsp. It does the same and works without problems
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Click to collapse
Can you link to said James dsp? Now I'm curious as to what this is. And if it works as well

Just search inside of magisk it's a standard module and works flawlessly for op9

noname122414 said:
Just search inside of magisk it's a standard module and works flawlessly for op9
Click to expand...
Click to collapse
Does it not need root rights.?But I'm using through by streaming now on way home from work. Very nice

Of course it needs root, magisk without root is kind of pointless.

noname122414 said:
Of course it needs root, magisk without root is kind of pointless.
Click to expand...
Click to collapse
But mine isn't asking for root rights is what I'm saying.

It is a module. Module always have root when it's functional then everything is alright

noname122414 said:
I'm using james dsp. It does the same and works without problems
Click to expand...
Click to collapse
Do you use any presets? If not, are you able to use those?