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Hi there!
I'm using Existenz ROM, a stock-based rom, and yesterday I tried to install Viper4Android FX with no success. I had already installed it on CyanogenMod and it worked perfectly. After having installed Viper FX on my phone, I opened it and it installed the drivers. Then it told me that LPA (Low Power Audio) was enabled in build.prop and that it could cause problems, so I allowed Viper to remove this feature from build.prop.
Then I rebooted and I started playing with settings. I opened Walkman but sound was the same as before. I enabled "Force Viper FX" but it didn't work either.
Can you help me?
Thanks!
Tomoms said:
Hi there!
I'm using Existenz ROM, a stock-based rom, and yesterday I tried to install Viper4Android FX with no success. I had already installed it on CyanogenMod and it worked perfectly. After having installed Viper FX on my phone, I opened it and it installed the drivers. Then it told me that LPA (Low Power Audio) was enabled in build.prop and that it could cause problems, so I allowed Viper to remove this feature from build.prop.
Then I rebooted and I started playing with settings. I opened Walkman but sound was the same as before. I enabled "Force Viper FX" but it didn't work either.
Can you help me?
Thanks!
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Stock Sony sound enhancements conflict with Viper Audio. The way I got V4A working on a stock Sony rom is by rooting, installing App Master, and using this app to uninstall all the sound enhancements that Sony puts into the ROM (I believe there are 3 packages to remove). App Master has the option to put apps in a recycle bin, so if you uninstall an app that actually breaks your sound system all together, it is fairly easy to undo the changes. After you uninstalled the stock sound fx, install V4A and it should work.
BTW - not sure if V4A will work with the Walkman app at all. You might want to try Poweramp.
Goto Settings/Sound/music setings or sound settings and select viper4android.Then use v4a.It will work
umair42 said:
Goto Settings/Sound/music setings or sound settings and select viper4android.Then use v4a.It will work
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Great! It worked! Thank you :good:
jupitreas said:
Stock Sony sound enhancements conflict with Viper Audio. The way I got V4A working on a stock Sony rom is by rooting, installing App Master, and using this app to uninstall all the sound enhancements that Sony puts into the ROM (I believe there are 3 packages to remove). App Master has the option to put apps in a recycle bin, so if you uninstall an app that actually breaks your sound system all together, it is fairly easy to undo the changes. After you uninstalled the stock sound fx, install V4A and it should work.
BTW - not sure if V4A will work with the Walkman app at all. You might want to try Poweramp.
Click to expand...
Click to collapse
V4A works perfect with Walkman , even with soundcloud.
UPDATED: Updated V4A flash file to Viper4Android v2.4.0.1 and added notes about the TabS AOSP Marshmallow custom ROM compatibility by Schischu.
The obligatory warning:
"I take no responsibility for what happens to your device if you follow this guide. This procedure works with multiple Audio/Video apps. It should work for any Samsung device, but I can't confirm, so feedback please if it works for your device."
- 3DSammy
Root with SuperSU is required either using a standard rooting method that trips KNOX or following this guide "[GUIDE] How to root without tripping knox - Kitkat and Lollipop, Locked bootloader" by ashyx. Having SuperSU installed and functioning is essential to get around Viper4Android's need for SELinux permissive mode which is not possible when you are using the Samsung stock firmware.
As of June 8th maximumentropy posted a method to use SuperSU to work around Viper4Android's need for SELinux permissive mode. This requirement was problematic on Samsung devices where the SELinux mode changer app did not work with the Samsung stock firmware.
The instructions and flash files below will allow both custom ROM and rooted stock ROM devices to install Viper4Android, an amazing audio replacement.
Note: V4A and the included flash file works with the AOSP Marshmallow custom ROM compatibility by Schischu. Any of the SoundAlive comments below can be ignored for this custom ROM.
Steps:
1) Download the two flash files "ViPER4Android-supolicy.zip" and "LolliViPER_TAB_S.zip" (at the bottom of this post)
2) Flash ViPER4Android-supolicy.zip and LolliViPER_TAB_S.zip with FlashFire or a Custom Recovery (e.g. TWRP) of your choice.
3) If you want Spotify to work and maybe other audio/video apps then Samsung's "SoundAlive" must be removed or disabled. Options:
Backup then freeze or delete "SoundAlive 2.0" with Titanium Backup
Backup then delete the "/system/priv-app/SoundAlive_Tablet_20" directory with a File Manager that has RW "/system" privileges
Remove "SoundAlive" with an app like "System Remover app" found on the Playstore
4) Reboot your device and then start Viper4AndroidFX and install its drivers when prompted then reboot once more
5) Start the Viper4AndroidFX app and configure audio for the device speakers/headset/bluetooth as desired. Please refer to Viper4Android XDA forum for details about the extensive options.
NOTES:
Be aware that if you do not disable/remove SoundAlive then Spotify will disable V4A until the next device reboot. Causing confusion about whether V4A is actually working reliably. Other audio apps may also demonstrate this tendency.
If you check the V4A driver status and audio is not playing the status will show "Processing: No" that should change to "Yes" when audio is playing and V4A is working correctly.
A Rule-of-Thumb with V4A is to make sure to turn off any Audio/Video player app's specific equalizers, gain controls, audio effects, ... etc, as they interfere with Viper4Android. If you still cannot get Viper4Android working with a specific app, that's not listed in this thread, then search first then if necessary ask on the V4A's XDA forum.
So far the following Audio/Video apps have been successfully tested with V4A:
Neutron audio player (Settings and uncheck Equalizer;Sound Sound;DSP-Effects->Surround Sound;Relay Gain;Normalization)
MX Player Pro (Settings->Audio->Volume Boost unchecked)
Spotify (If it is working properly the Spotify->Settings->Equalizer will directly display the V4A app)
TuneIn Radio
Google Music Player
PowerAmp (PowerAmp Settings->Advanced->Uncheck everything)
YouTube
ViralPro (a YouTube alternative)
Apps that do not work with V4A (likely due to the removal of "SoundAlive"):
Samsung's "Music" app (still plays audio but not by utilizing V4A processing)
Please post any apps not mentioned here, which you either get working or that have problems with after checking the V4A XDA forum.
If you have SuperSU working and have never tried V4A do so and you ears with thank you!
Credits:
zhuhang: For developing Viper4Android in the first place
Chainfire: For developing SuperSu and FlashFire
ashyx: For providing the "How to root without tripping knox - Kitkat and Lollipop, Locked bootloader" guide
maximumentropy: For posting the method and flash file to work around V4A's need for SELinux
AndrasLOHF: Who's post is where I grabbed the original V4A install script.
Schischu: For AOSP Marshmallow custom ROM
Zip file(s):
V4A install for a Tab S
Thanks worked like a charm. Been trying to figure it out for about a week
+1! Stable viper performance with LP, great sound, thank you so much!
Best, maris
Thanks man, It works like a champ and beats my Bose speakers same as S6
Brilliant job mate...
PS. I spent almost a week to switch between KK snd LP. Even S6 was easies with V4A
Worked great. Thanks
works great on my sm-T700 thanks..
Works great on my MOAR S5
will try on the tab s t705c.
3DSammy said:
Flash ViPER4Android-supolicy.zip and LolliViPER_TAB_S.zip
Click to expand...
Click to collapse
Hi and thanks a lot for helping others out with the notoriously difficult to install viper app.
I presume the supolicy zip is intended as an alternative to setting selinux permissive. Any negatives to using one method over the other?
Also, can you please explain what your application zip does exactly. Does it just install the original viper as a system application or did you make any other modifications?
Thanks!
schiphol said:
Hi and thanks a lot for helping others out with the notoriously difficult to install viper app.
I presume the supolicy zip is intended as an alternative to setting selinux permissive. Any negatives to using one method over the other?
Also, can you please explain what your application zip does exactly. Does it just install the original viper as a system application or did you make any other modifications?
Thanks!
Click to expand...
Click to collapse
Either method of getting V4A permissive mode will work but if you rooted and maintained KNOX the stock bootloader blocks SELinux from setting permissive mode so the supolicy is your only alternative. Besides I read a comment from Chainfire who indicates that using permissive mode system wide is poor security practice. On my Nexus 5 which is running marshmallow I found all I needed was two supolicies to get all my root apps running and they were for V4A and stickmount.
The supplied V4A flash file installs V4A in /system/priv-app, sets permissions and attempts to delete two apps that the stock Samsung firmware does not have. Those audio apps are in the Google stock firmware and do no harm as there is nothing to delete. The flash file is based off one for V4A on a Nexus 5. I choose to not delete the Samsung audio app as some people may want to back it up, besides I documented three ways to deal with that app.
I hope you enjoy V4A.
Sent from my SM-T800 using XDA Premium HD app
Dr.Ketan V4A fix for stock touchwiz android 5.0.2 work like a charm on my Tab S T705
Simple as install normal apk, one tap. Done. Here http://forum.xda-developers.com/showpost.php?p=61858278&postcount=3079
This thread is impressive it work !!!!
Thanks. Tried this on my tab S. Works.
RocketPlayer is another music app that works with V4A.
Wow, I wish I had seen this thread sooner. Maybe I can fix the sucky Bluetooth performance in my tab now! Can't wait to try it. Thanks!
Working perfectly in Galaxy Alpha (g850m - Exynos) with enabled root and native kernel, including the Mix Radio (without special settings).
Thank you so much you saved my travels to work !!!
Does V4A not work on KitKat? I decided to downgrade back to KitKat but can't get it to work.
noxarcana said:
Does V4A not work on KitKat? I decided to downgrade back to KitKat but can't get it to work.
Click to expand...
Click to collapse
Yes the app works on KitKat but the directory structure for apps on /system changed. I'd suggest going to the ViPER4Android XDA forum and searching for KitKat installs. That forum link is in the OP (first post).
Sent from my SM-T800 using XDA Premium HD app
3DSammy said:
Yes the app works on KitKat but the directory structure for apps on /system changed. I'd suggest going to the ViPER4Android XDA forum and searching for KitKat installs. That forum link is in the OP (first post).
Sent from my SM-T800 using XDA Premium HD app
Click to expand...
Click to collapse
Ok. Thanks for the reply!
Edit: So, I was't able to find anything there about Kitkat specific installation, but I did find someone that help me figure out what my issue was.
Wow.. Excellent its working on my samung J2 J200F
Very very thanks 3DSammy, I rooted my new samsung j2 only for viper4adroid and I tried a lot and failed and many times ended in boot loop but this time Great Success, Its working fine on Stock Rom with TWRP recovery. But its only working perfect in compatible mode only (normal mode just work for some seconds only then processing stopped) but no problem I am happy .
**As an alternative, Dolby Digital Plus apk can be used. No root required.
It's not as comprehensive but will enhance your music listening experience.
Dolby Digital 1.6 app can be downloaded here:
https://devfiles.co/download/Nq44yRMN/Dolby-Digital-1.6.apk
This version of Dolby Atmos is working on Oreo. Had no luck with other versions.
I downloaded DolbyAtmos_Axon7_Oreo_20180125.zip to be precise.
I installed via recovery TWRP. Not Magisk. I took no other steps than to download the file listed above, install via TWRP and reboot.
Later I installed Viper4android via Magisk. Both are working fine.
Thanks guitartedhero for this!!
https://forum.xda-developers.com/android/software/app-dolby-atmos-axon-7-oreo-port-t3740508
is there a way to install this without Magisk but Super SU?
I did install using TWRP and did not use magisk. None of the existing magisk modules worked for me. I don't believe SuperSU would be a hindrance at all.
Hope that helps!
This didnt work for me in the latest SuperXE ROM.
My phone went bootlooping.
Also, install via TWRP not Magisk. That's what's working for me. Good luck now!
I'm on superxe room myself. Other versions made me bootloop. Make sure you download DolbyAtmos_Axon7_Oreo_20180125.zip. That's the one that's working for me.
Best of luck!
How do we know if dolby atmos is enabled after downloading viper and this mod?
I downloaded the zte axon 7 unity version and flask in magisk but got force close every time i open the dolby atmos app. Is that the one you uses?
I never got any of the Dolby modules to work for me through Magisk. Maybe some have, but I did not.
Instead i installed this particular zip version with my recovery TWRP (not Magisk) and it is working fine. Make sure you install by booting into recovery, then installing it via TWRP.
Make sense? ?
Anyone had luck on lineage 15.1????
Is it working on Oreo ? Did anyone found any difference in audio quality???
Does not work still. Maybe bc my rom has an audio effect built in already? Im using RR neo angler remix . It has audiofx in
1959guy said:
Also, install via TWRP not Magisk. That's what's working for me. Good luck now!
I'm on superxe room myself. Other versions made me bootloop. Make sure you download DolbyAtmos_Axon7_Oreo_20180125.zip. That's the one that's working for me.
Best of luck!
Click to expand...
Click to collapse
Can you tell if it works on android 8.1, and what is the advantage of using this module? Improves sound quality of the speakers and headset?
rafael.rm.moreira said:
Can you tell if it works on android 8.1, and what is the advantage of using this module? Improves sound quality of the speakers and headset?
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Click to collapse
Working perfectly on latest lineage os 15.1......on normal speakers I didn't find much difference but headset definitely has a difference. The audio quality is superb....not placebo......... Working perfectly!!!!!!
sethukrishnan said:
Working perfectly on latest lineage os 15.1......on normal speakers I didn't find much difference but headset definitely has a difference. The audio quality is superb....not placebo......... Working perfectly!!!!!!
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Click to collapse
how did you get it working on Lineage 15.1 am having trouble with it here.
NingaR said:
how did you get it working on Lineage 15.1 am having trouble with it here.
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Click to collapse
What hapnd ???
I have nexus 6p w/SUPERXE-8.1.0 and Magisk
This Dolby works for me (DOLBY-AXON7-Oreo-Unity2.20.18.zip
Thanks very much for the work you have done
I'm glad it's working for folks! I'm enjoying it. Viper as well!
Please let me know if it doesn't work for you and I'll do what I can to help.
It's working with Viper4android, too!
I see some are having trouble getting this to work. Please comment and I'll try to do what I can to help. Thanks!!
Will this work on my 6p running Resurrection Remix Oreo? And how do i install viper4android? RROS comes with audiofx but its not all that good at times.
I have no reason to believe that it would not work.
I personally installed this module through TWRP. Not Magisk. But I did install Viper FX through Magisk. Both are working.
Anything else that I can do to help, I would be glad to try. Thank you. Sincerely.
Bootloop with stock oreo 8.1 march update, after flashing DolbyAtmos_for_Oreo_20180219.zip thu TWRP
Hey all. Is there a viper-atmos that works with oreo? Everything ive tried and flashed doesnt seem to work or in bootloop. I was able to either use dolby atmos standalone or viper4android standalone with magisk modules but not a fan of magisk.
I also having a problem finding a solution in audio mod. Could you give a link for the standalone viper and atmosphere, please.
Hi! Anyone successfully installed any audio mods like v4a etc to our device? I'm using pixel experience and no luck. I hope anyone can help me.
Have you checked this forum?
Install Viper4Android on Xiaomi 11T/Pro | Uninstall Dolby Atmos (Optional)
Greetings, I will be walking you through the steps to get Viper4Android working without setting the SELinux to Permissive mode. I'm hoping this will work on most MIUI 13 devices, so it might work for other phones as well running MIUI 13...
forum.xda-developers.com
Ask youre question over there, 99% someone knows what to do.
shanreecodr said:
Hi! Anyone successfully installed any audio mods like v4a etc to our device? I'm using pixel experience and no luck. I hope anyone can help me.
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Click to collapse
I hope one of our members referred the article to install V4a . I have installed it on my phone and it works like charm. If you have a proper DAC and a headphone it's a great choice.
mm_rajesh said:
I hope one of our members referred the article to install V4a . I have installed it on my phone and it works like charm. If you have a proper DAC and a headphone it's a great choice.
Click to expand...
Click to collapse
I'm stuck at No driver installed everytime I open up v4a, I've followed every guide here
shanreecodr said:
I'm stuck at No driver installed everytime I open up v4a, I've followed every guide here
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Click to collapse
I can only suggest to uninstall v4a and reinstall as mentioned in the installation procedure. It should work if you have done that properly.