Database Info

Viper4Android driver installation fails everytime.

Any GP 2 owner got error "Installation failed because of an I/O error. Try rebooting" after freshly installing (from magisk/twrp)?
Driver Version = 0.0.0.0
Enabled: No
Status: Abnormal
Audrio Format: Unsupported
Magisk Modules installed:
Busybox for Android NDK
Audio Modification librabry
universal deep_buffer removar
SeLinux mode changed to permissive.
No matter how many times I install/reboot this/phone, I always get this error.
OS = 8.1 w/ March Sec Update
Logcat
03-20 20:17:31.572 3573 3573 I ViPER4Android: System booted.
03-20 20:17:31.573 3573 3573 E ViPER4Android_Utils: [Fatal] Can't load libV4AJniUtils.so
03-20 20:17:31.573 3573 3573 I ViPER4Android: Jni library status = false
03-20 20:17:31.573 3573 3573 I ViPER4Android: Driver not configured correctly.
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Get the one from zack it works flawlessly
Sent from my Pixel 2 using Tapatalk

I use the one from magisk actually works its the fx materialized one by ahrion and zack

Delta wolf said:
I use the one from magisk actually works its the fx materialized one by ahrion and zack
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I've tried to install this several times and the driver never gets enabled. It asks to reboot in order to install the driver every time I open the app after rebooting the phone. Did you do anything special? What's the secret?

westhaking said:
I've tried to install this several times and the driver never gets enabled. It asks to reboot in order to install the driver every time I open the app after rebooting the phone. Did you do anything special? What's the secret?
Click to expand...
Click to collapse
You have to choose viper4android fx.

Thank you all for your replies. Zack helped me figure out the issue. I had installed Audio-Modification-Library module which was preventing A4A installation. Cheers!

Burninh2o said:
Thank you all for your replies. Zack helped me figure out the issue. I had installed Audio-Modification-Library module which was preventing A4A installation. Cheers!
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Click to collapse
Because of this post, I decided to install the Audio Modification Library module to see what it does. Oddly enough, for me, V4A actually started working after enabling this additional module and setting my kernel to permissive. Weird. Glad it's working now though!

westhaking said:
Because of this post, I decided to install the Audio Modification Library module to see what it does. Oddly enough, for me, V4A actually started working after enabling this additional module and setting my kernel to permissive. Weird. Glad it's working now though!
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lol... nice!

I just had the same issue as a result of upgrading stock MIUI Android 7.1 ROMS on a Xiaomi Mi Max 2.
I solved it by:
1. In Magisk, disabled both Audio Mod Library and Viper4Android --> REBOOTed.
2. In Magisk, ENABLED both Audio Mod Library and Viper4Android. --> REBOOTed.
No driver errors and it works in Speaker and Headphone.
But I'm not getting any Viper Notification in the Shade or the Status.

Burninh2o said:
Thank you all for your replies. Zack helped me figure out the issue. I had installed Audio-Modification-Library module which was preventing A4A installation. Cheers!
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Click to collapse
This fix works flawlessly on the H918 running the Alpha 3.0 rom

Catalyst2012 said:
I just had the same issue as a result of upgrading stock MIUI Android 7.1 ROMS on a Xiaomi Mi Max 2.
I solved it by:
1. In Magisk, disabled both Audio Mod Library and Viper4Android --> REBOOTed.
2. In Magisk, ENABLED both Audio Mod Library and Viper4Android. --> REBOOTed.
No driver errors and it works in Speaker and Headphone.
But I'm not getting any Viper Notification in the Shade or the Status.
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Click to collapse
Stock Kernel too? I cannot get it to install drivers to save my life

MikeyLee said:
Stock Kernel too? I cannot get it to install drivers to save my life
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Click to collapse
Did you try Disabling/Enabling the modules in Magisk? I had to do this a few times before it worked. Viper status will report 'Processing: No' until you start playing a music file, then it should change to 'Processing:Yes'.
I was able to get the notification to show up by selecting the first option in Settings>Show Notification.

I've tried just about everything I can think of.

Here's what I don't get. I have 3 devices currently. All running Oreo. Huawei Mate SE, Xiaomi Redmi Note 3 and Ulefone T1. The Redmi Note 3 and Ulefone T1 both have V4A working fine and both kernels are Enforcing. The Huawei no matter how it's set refuses to work.

viper4android

Any success in making v4a work in this device. After installing magisk it appears that none of the available magisk version of v4a works!

need a permissive kernel and then maybe

Sam_kaks said:
Any success in making v4a work in this device. After installing magisk it appears that none of the available magisk version of v4a works!
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From what I've read V4A is a 32 bits app and the drivers too, we have to wait until the app get updated to 64bits and then should work

Viper4androi in oxygenos 10?

Dies anyone had sucess installing viper4android in the new oxygenos?

TheDarkMadness said:
Dies anyone had sucess installing viper4android in the new oxygenos?
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Yes, V4A works on OOS10

Sai_Praneeth said:
Yes, V4A works on OOS10
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how did you Install IT, Therme are so many ways...

TheDarkMadness said:
how did you Install IT, Therme are so many ways...
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Click to collapse
I managed to install viper on op7 OOS10.0.1 with bluspark kernel with the following method:
1) uninstall every AML and ACP and viper stuff and reboot.
2) install ViPER4ANDROID 2.7.1.0 apk from xda labs and open the app but dont install driver. put the app in background
3) go to magisk>downloads and install AML module. it will ask to reboot. dont do it.
4) go back to viper and install driver. it will automatically reboot.
5) after reboot go to magisk manager and UNCHECK (NOT DELETE) AML and open viper and install driver again.
6) now your phone will boot with viper installed
Note: (if viper driver is installed but has no effect then go to viper and click on 3 dot menu then click on 'attach audio effects' once viper start working you can detach it). you can use App Systemizer on magisk repo to systemize viper app to priv-system app so that it doesnt get killed in background. you can also hide its always on notification. viper will always run in background. but i saw no battery drain difference. Enjoy

Worked for me in Stock Rom oos 10.0.1?

Or you can easily flash in magisk repo

Good alternative module repo magisk James DSP (DCC and irs files supported)

How are you guys rooted on oos 10?
I lost root when I updated and when I went to redo it I found that the process changed for Android 10.

What is you parameters on Viper ? For Compare.
Thanks

matdu57 said:
What is you parameters on Viper ? For Compare.
Thanks
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I installed it the complicated way, thats written up there and it worked fine. I had to wait because i lost root in the oos 10 update, because i flashed magisk in the wrong way. And there was no twrp that worked for me, fastboot boot didnt worked at all, so i flashed magisk to the boot image and i got root again with viper4android and everything works fine.
'Version 2.5.0.4
NEON yes
activated No
Status normal
Audio format supported
verarbeitung (its german, idk whats taht in englisch sry) no
48000

No sorry i talking about setting for the sound.
Sorry for my bad english.
Viper is working on OOS 10

matdu57 said:
No sorry i talking about setting for the sound.
Sorry for my bad english.
Viper is working on OOS 10
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Oh ok, so here are my settings:
i enabled compressor on default settings
i got equalizzer on the last setting, so i can hear the voices better
and of course the optimization
for my holyhigh in ears and my xiaomi airdots i use:
spectrum extender on full settings
equalizer on the same setting
surround sound on lvl 1
dynamic system
viper bass on 43 hz and 15
and the second last setting on 3
whats your settings?

For the speaker i have the same but without compressor.
On ma headphone (Marshall) USB with DAC 3.5mm :
Playback gain : strong 2 et default setting for the other
Spetrum extender full
Equalizer on the same
Surround + Level 3
Viper bass 70hz on normal bass
Viper clarity Xhifi 3.5 dB
AnalogX level 2
For the bluetooth i don't have setting for my car and bluetooth bose soundlink. I'll share with you my setting on the next week

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.
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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.
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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
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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.
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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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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
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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.
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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
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Do you use any presets? If not, are you able to use those?

Question Audio quality and volume issue

experiencing some audio issues with headphones:
- audible white noise
- low pitch noise when plugging in audio cable
- too loud. this makes volume control less precise.
- way too much loud during call. even with lowest volume.
LineageOS 18.1 latest, NoGravity kernel, V4A, AML, ACC. didnt check with other environment, but checked this happens without V4A installed too.
possibly kernel or ACC modified PMIC configs, or just device onboard sound driver has poor quality.
how was your experience? leave reply to figure out solution.

wb1016 said:
experiencing some audio issues with headphones:
- audible white noise
- low pitch noise when plugging in audio cable
- too loud. this makes volume control less precise.
- way too much loud during call. even with lowest volume.
LineageOS 18.1 latest, NoGravity kernel, V4A, AML, ACC. didnt check with other environment, but checked this happens without V4A installed too.
possibly kernel or ACC modified PMIC configs, or just device onboard sound driver has poor quality.
how was your experience? leave reply to figure out solution.
Click to expand...
Click to collapse
I didn't install the custom kernel. I do have V4A and AML.
You also need to do the sepolicy fix for V4A.

Lu5ck said:
I didn't install the custom kernel. I do have V4A and AML.
You also need to do the sepolicy fix for V4A.
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i didnt install any. AML just fixed issue about SE.

wb1016 said:
i didnt install any. AML just fixed issue about SE.
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Isn't NoGravity kernel the custom kernel?
As for sepolicy, at least not for me, did V4A says "supported" and "normal" status?
This is what I followed for sepolicy
[MOD] viper4android + MIUI 12 + Magisk 21.1
Default viper4android Magisk module doesn't work for me with SELinux enforcing. "Brute force" fix is to set SELinux to permissive, but I don't like this approach. Viper4android module should patch selinux policies during installation, but it...
forum.xda-developers.com

Lu5ck said:
Isn't NoGravity kernel the custom kernel?
As for sepolicy, at least not for me, did V4A says "supported" and "normal" status?
This is what I followed for sepolicy
[MOD] viper4android + MIUI 12 + Magisk 21.1
Default viper4android Magisk module doesn't work for me with SELinux enforcing. "Brute force" fix is to set SELinux to permissive, but I don't like this approach. Viper4android module should patch selinux policies during installation, but it...
forum.xda-developers.com
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Click to collapse
because i really wanted to keep my SE enforcing, i followed this guide
Android Q: Viper4android compatible?
I've been trying to get viper4android working on Android q for quite some time but the module and the app itself does not want work at all. Plus when viper asks you to install the driver from the app it will end up in a bootloop. Has anybody...
forum.xda-developers.com
and it works

but as i experienced this issue even before installation of custom kernel and v4a, i assume this is hardware issue.

wb1016 said:
because i really wanted to keep my SE enforcing, i followed this guide
Android Q: Viper4android compatible?
I've been trying to get viper4android working on Android q for quite some time but the module and the app itself does not want work at all. Plus when viper asks you to install the driver from the app it will end up in a bootloop. Has anybody...
forum.xda-developers.com
and it works
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Interesting, I just tested and notice that this method while worked but because it disable AML, it means you can only use one sound mod and can't switch to other sound mods as you please otherwise it will break whatever mod.
The link I gave didn't disable se enforcing, it basically reapply the sepolicy.rule because for whatever reason, v4a or aml didn't apply the said sepolicy.rule or it got revoked one way or another.
wb1016 said:
but as i experienced this issue even before installation of custom kernel and v4a, i assume this is hardware issue.
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I didn't encounter those noise on my phone, even at clean install so yea...