[MOD] Quasar AtmoX Ultimate Sound Mod [v4.0] [Official] [LP/MM/N]

Quasar AtmoX Ultimate

After lots of research, testing and using my porting knowledge, I have finally made an ultimate sound mod which is inter-compatible with most of the AudioFX like that of CyanogenMod, Oxygen OS etc.

I have included the best sound enhancement systems in one ultimate mod called Quasar AtmoX. I am very thankful to various XDA members who shared audio libs and files from Xperia, HTC, Lenovo and other devices. I am also thankful to the devs of different sound mods Dolby Atmos®, Viper Audio, Xperia™ Audio Enhancement, HTC Beats etc.

After lot of hard work, searching, testing and help from other Sound Mod devs, I made QuasarAtmoX™ – Xperia™ Viper Atmos® – the best in industry audio mod.

Disclaimer: I am not responsible for anything that may happen to your ears or phone speakers due to your carelessness or misuse of this sound mod.

Note: It is recommended to be careful while using xLoud™ at speaker mode (higher volumes for longer time may damage phone speakers). And while using head-phones be careful with Dolby’s Volume Leveler.


Xperia Music + Sony Sound Enhancement

Sony A E

Technologies Included:

  • ClearAudio+
  • Xperia™ Equalizer
  • Dynamic normalizer
  • Surround Sound (VPT) [Studio | Club | Concert Hall]
  • Clear Stereo
  • Clear Phase™
  • xLOUD™
  • S-Force Front Surround


Dolby Atmos®

Dolby Atmos transports you into the story with moving audio that flows all around you with breathtaking realism.

Dolby Atmos

Quasar Atmox SS3

ViPER’s Audio

It is the ultimate sound control mod. QuasarAtmox™ includes the best and latest ViPER4Android FX v2.5.0.5.


Note: If you feel some complications while using Viper with other Audio FX then enable 'FX Compatible Mode' from Viper's menu.

Quasar Additions

After these best Audio Enhancement Technologies if anything left is completed by Quasar™ Additions which includes:
  • Beats Audio™
  • Dirac HD
  • Deep Buffer
  • Extra Bass + Optimized Audio
  • Inter-compatibility with other AudioFX like CM AudioFX, MAXXAudio etc.
Beats Audio

How to Install

  1. Download the latest build of QuasarAtmox Ultimate Sound Mod
  2. Reboot to TWRP Recovery
  3. Flash QuasarAtmox Ultimate Sound Mod (You may wipe caches if required)
  4. Reboot 

How to Uninstall

Simply flash the Quasar Atmox Uninstaller provided for each specific version.


QuasarAtmoX™ v4.0 Stable (LP/MM/N)


Size: 40.8 MB

Note: Your /system should have at least 70 MB free to flash this mod.

QuasarAtmoX™ 4.0  Uninstaller


Older Builds:
QuasarAtmoX™ v3.0 Stable (LP/MM/N):
QuasarAtmoX™ 3.0  Uninstaller:

QuasarAtmoX™ v1.0 Stable (LP/MM/N)


WAVES MaxxAudio® [Only for Marshmallow]

MaxxAudio MM

*Only for Marshmallow users

Download MaxxAudio® (Marshmallow)https://www.androidfilehost.com/?fid=817550096634776811

WAVES MaxxAudio® [Only for Lollipop]

*Recommended for Lollipop users

Download MaxxAudio® (Lollipop) : https://forum.xda-developers.com/android/software/mod-maxxaudio-lenovo-vibeui-3-0-t3277530

Thanks to @androidexpert35 for porting it. :)

Viper Audiophile Profile

To use the Audiophile™ Profile, extract the Audiophile Quasar Profile zip and merge the 
/ViPER4Android folder into the directory where /ViPER4Android/Profile/Stock exists.

Possible location paths are:

Download Audiophile™ Profilehttps://www.androidfilehost.com/?fid=673368273298964247


QuasarAtmoX™ v4.0-N Stable [26.02.2018]
Added prebuilt audio_effects.conf for fetter audio processing
Added ability to update Sony apps from Google Play
Added Sony Podcast
Added S-Force sound effect
Added new Sony Audio Enhancement app with material design
New Sony audio processing can be controlled from Audio settings in Music app
Added new icon to Viper
Enabled LDAC™ for compatible devices
Updated Sony Music and related apps
Updated sony audio effect blobs
Updated sony_effect binaries from Xperia XZ
Updated sony framework
Updated Headphone Selection app
Improved compatibility with Nougat
Fixed low in-call volume bug in some Nougat devices
Removed deprecated sony playanywhere
Removed unwanter qcom libraries
Updated unistaller
Many internal optimizations

QuasarAtmoX™ v3.0 Stable [15.06.2017]
Improved stability
Added maximum compatibility (now it modifies audio_effects.conf file instead of replacing it)
Fully compatible with existing stock AudioFx/Equalizer of MIUI, ColorOS, AmigoOS, LineageOS etc.
Fixed music visualizer not working in some ROMs
Updated Viper4Android to v2.5.0.5
Improved performance of Dolby Atmos
Added Xperia X sound procesing
Added LDAC™
Ported Dirac HD Audio from MIUI
Improved resampler quality
Improved Bass
Improved Treble
Improved Clarity
Fixed sound distortions in some ROMs
Removed Xperia MusicFX app as it was incompatible with most of the ROMs
Added MaxxAudio as an add-on
Cleaned obsolete Xperia apps
Added latest Xperia Music
Now comes with an uninstaller
And with new add-ons

QuasarAtmoX™ v1.0 Stable [12.10.2016]
Initial release


[XDA Members]
Thanks to @viper520 & @zhuhang for the glorious ViPER4Android™.
Thanks to @worstenbrood for the Dolby Atmos™
Thanks to @androidexpert35 for some Xperia Audio Enhancement files
Thanks to @XpRoPhEtX2015 for MaxxAudio [MM]
Thanks to @Viper4713 for the Material v4a apk's.
Thanks to @guitardedhero for Z5 Premium MM files and others
Thanks to @alone_in_dark For his White sound enhancement port

[YU Forum Members]
Thanks to my testing team:


DevDB Information

QuasarAtmoX™ v4.0 Stable (LP/MM/N)

MOD Information

Developer: Nitesh Prasad a.k.a nitesh9
MOD Firmware Required:  Android 5.0.x/5.1.x/6.0.x/7.x.x and up
Based On: Dolby Atmos, Sony Sound Enhancement, Viper4Android and others

Version Information

Status: Stable
Current Beta Version: QuasarAtmoX™ v4.0 Stable
Update Release Date: 26.02.2018
First Release Date: 12.10.2016

Qualcomm vs Mediatek : Which Smartphone Processor Should You Choose?

Why should you prefer Qualcomm over MediaTek while choosing a smartphone processor? How is Qualcomm different from MediaTek? Read through to find out...
Mediatek vs Qualcomm

This is the era of smartphones and smart devices. Day-by-day smartphones are getting well equipped with new and more advanced technologies. There was a day when smartphones featured only few MB's of RAM and processors with very less clock-speed. But today the scene has changed and is changing very rapidly.

The smartphones of today are much powerful with high-speed multi-core processors and large LPDDR3/ LPDDR4 RAMs. Their performance and features and now comparable to laptops and sometimes they even surpass them.

But, this rapid advancement in technology has provoked people to upgrade their smartphones. Today, smartphones have become cheaper, even people with a tight budget can get better smartphones at a reasonable price. Again for this to happen people must have some basic technical knowledge about the smartphone hardware. Because there are many OEMs which are selling smartphones with cheap hardware at high prices to earn maximum profit. One of the most important hardware of a smartphone is its processor and chipset, collectively known as SoC (system on chip). This is basically the heart of a smartphone as it affects the smartphone in every aspect, from performance to battery backup, from graphics to camera capabilities.

The processor of a smartphone is responsible for its processing speed, multitasking capacity, smooth performance, battery backup and efficiency in handling heavy tasks without much heating. And smartphone chipset, which is also supplied by the processor manufacturer, contains other important hardware capabilities like network connectivity, Wi-Fi, Bluetooth, audio processing, video processing, RAM capacity, camera capacity (x Mega Pixels), display capability (HD, FHD, QHD, 4K) etc. Even the GPU (Graphics Processing Unit), which is responsible for graphics performance and detail, is also supplied by the processor manufacturer. Basically, both the chipset and the GPU come integrated with the processor and not supplied separately. So, the quality of GPU and chipset depends on what processor you choose.

MediaTek vs Qualcomm

Qualcomm - Mediatek

There was a time a few years back when MediaTek processors were popular among budget and mid-range phones. There were no good Qualcomm processors which could provide value for money as compared to their MediaTek counterparts. As MediaTek processors were cheaper and were capable of giving satisfactory performance, they were widely used by manufacturers in the budget and mid-range smartphones.

But, today the scenario is different. Now we have good Qualcomm Snapdragon processors (SoC's) in budget and mid-range as well. And they are giving a good competition to MediaTek not only in price but also in providing overall end-user experience. So let's see how Qualcomm performs as compared to MediaTek. Is it better?

Origin: Old vs New

Qualcomm Company

Qualcomm is an American company which started in 1985. Its first products included OmniTRACS, a satellite locating and messaging service, and also various specialized IC's (Integrated Circuits) for digital radio communication. It launched its first Snapdragon processor in 2005 when no one knew how smartphone market will overtake feature phones and other electronics in the coming decade.

Mediatek Company

On the other hand, MediaTek is a Taiwanese company started in 1997. It was previously a unit of United Microelectronics Corporation. MediaTek started with manufacturing chipsets for optical drives and subsequently expanded to chip solutions for DVD players, digital TV's, mobile phones, smartphones and tablets. First MediaTek processor was used in a smartphone in 2009.

However, Qualcomm and MediaTek started testing smartphone processors almost in the same period, but Qualcomm quickly gained a larger share in the smartphone market. Qualcomm was already a big IC manufacturer, which also became a leading smartphone SoC manufacturer. So why had Qualcomm a larger share? How Qualcomm was different?

Technology and Architectural Design

Snapdragon Chip

Both Qualcomm and MediaTek use ARM architecture to manufacture their processors. There is no harm in that. But while MediaTek directly implements ARM's architectural design without much research and improvements in manufacturing its processors, Qualcomm, on the other hand, spends a lot of money in research and development in tweaking its processors for best user experience. It does not directly use the ARM's instruction set to manufacture its processors. It works to improve the design and tries to remove some flaws if any. And this is where Qualcomm stands ahead of MediaTek.

Qualcomm Technology Evolution

Also, Qualcomm tries to use better manufacturing technologies like 14nm (lower is better) and sometimes even 10 nm for better efficiency. But MediaTek has been using technologies of 28nm, 20nm in its processors, which is not that good. If we compare two popular processors from both the brands, Qualcomm Snapdragon 625 comes with a 14nm technology and MediaTek Helio P25 packs a 16nm technology.

However, the recent MediaTek Helio processors seem to perform far better than its predecessors, especially the Helio X30 which comes with the 10nm technology. Although MediaTek is releasing newer processors, it still lags behind Snapdragon SoC in many aspects.

Number Game : More Cores vs Better Efficiency

Mediatek Helio X20 Specs

If you see the specs of MediaTek processors, you may find them pretty impressive at least on paper. MediaTek gives more focus on power and performance. Like showing off deca-core processors, 2.x GHz clock speed etc. What MediaTek does is basically a tricky number game to attract buyers by showing high benchmark scores. It only exaggerates the specs, for example even if you have a deca-core processor with 2.6 GHz clock speed, but a 20nm technology (e.g. MediaTek Helio x27) won't give you better efficiency. On the other hand, it will result in overheating and huge battery drain. This is what happens in MediaTek. As I have said, MediaTek doesn't work much in tweaking processors and doesn't care much about the end-user experience.

Qualcomm Headquarters
Qualcomm Headquarters and Research Center

But, Qualcomm puts a lot of effort in tweaking its processors for better efficiency. Qualcomm's R&D works hard to modify the design for a balanced performance. Yes, Qualcomm processors don't have deca-core and higher clock speed in similar price brackets like that of MediaTek. But they provide a better battery backup, less heating and smoother performance. All in all, they give a better user experience. And obviously, due to this Qualcomm Snapdragon processors are more durable than MediaTek's.

GPU (Graphics Processing Unit)

How is MediaTek in graphics performance? Is it better than Qualcomm?

MediaTek uses Mali GPU for most of its processors, which is provided by ARM itself. The performance of Mali GPU in MediaTek processors is not promising and not at all comparable to that of Qualcomm's GPU. Well, the problem is not in Mali GPU. It's good, even Samsung uses it in its Exynos processor. The problem is in the version of Mali GPU used by MediaTek. It uses older versions of Mali GPU which could not provide a competitive edge to other GPUs available with other processors. The same story is for PowerVR GPU used by MediaTek for a few of its high-end processors.

Qualcomm Snapdragon Gaming

While on the other hand, Qualcomm manufactures its own GPU units named Adreno. They perform far better as they get better tweaks to run efficiently with Snapdragon processors. So, Adreno GPU's, which are although less clocked than MediaTek's Mali, perform far better and give more realistic graphics texture. Also, as said, Qualcomm focuses much on development, so game developers love to make games for Adreno GPU's. This is because developing games and software for Adreno GPU's are a lot easier than making a game for a Mali GPU.

Developers' Choice : Android Development

Snapdragon Camera Firmware

Qualcomm is very much interested not only in tweaking its hardware but also in the development of compatible software for it. It provides source codes for the drivers and firmware of its SoC's and also updates them periodically. And because of this, Qualcomm devices (smartphones) are more developer friendly and get many custom ROMs, custom recovery, custom kernel and lot many tools for them. Sometimes, Qualcomm smartphones keep getting latest versions of Android by unofficial developers, even if the OEM has stopped providing updates to them.

However, this is not the case for MediaTek SoC's. MediaTek is not much interested in software development, nor does it provide source code for most of its processors. And this is why MediaTek devices only get to ROM ports from other MediaTek devices and rarely get new Android versions from unofficial developers.

This is the reason developers prefer Qualcomm processors over MediaTek.

Price : Cheap vs Expensive

Snapdragon Phones

MediaTek processors are known for their low price. This was probably the reason for its success in last few years. As MediaTek processors were cheaper they provided value for money in the budget and mid-range smartphones. Also, another reason was that the cheaper processors provided by Qualcomm at that time were utterly useless.

But at present, there are many good budget Qualcomm Snapdragon processors available with good features and specs. Although similar priced MediaTek processors look good on paper, but Snapdragon beats them in end-user experience even in budget range smartphones. So, many of the bigger players of smartphone industry are choosing Snapdragon processors for their budget range smartphones.

However, we have to say that, if you are going to buy a smartphone of around $100 or above you must look for a Snapdragon processor. But for even a lower budget you can go with a MediaTek one.

Final Verdict

Qualcomm Snapdragon

I am neither against MediaTek nor am I a Qualcomm lover. All my opinions are based on data and reviews available online about these processor brands accompanied with my personal experience.

So, what processor to choose depends on what are your preferences and budget. If you have a very less budget and want a phone for basic use like phone call, surfing etc. then you can go for a MediaTek processor. But if you want an all-rounder smartphone with good performance and best battery backup and want lasting software updates and development, then you should choose a Qualcomm Snapdragon processor.

If you are planning to buy a high-end or a flagship smartphone, then it is not recommended to opt for a MediaTek SoC. Even choosing MediaTek for a mid-range smartphone cannot be seen as a good decision.

So, I recommend Qualcomm chipset over MediaTek as it will disappoint you less.

[Official] [ROM] QuarkOS™ v3.0 Stable for Yureka and Yureka Plus [LP-5.1.1][ARM64]

QuarkOS Banner

I am very happy to release my first version of QuarkOS for Yu Yureka and Yureka Plus. With the demand of VoLTE support for Yureka (especially after the arrival of Jio :p) and availability of YU5510A-LP VoLTE modem there was a need of a good ROM/OS which can use the modem much efficiently to provide VoLTE calling and other LTE features. So, here comes the QuarkOS™ fully designed by me. It will give the best VoLTE experience with best battery backup to Yureka users without any heating issue whatsoever.

QuarkOS™ gives you the best telephony, best UI, best sound, best performance, best battery backup, best camera performance and best ever user experience.

Disclaimer: This ROM has been tested and verified to be stable for daily use but there may be some unknown bugs. The development team is not responsible for any damage to your device or your information.


Optimized Enhanced LTE Service 
Fully optimized for best VoLTE calling, 4g Internet, without any unwanted battery drain and heating issues.

Best of Xperia™ apps and features
The ROM incorporates the best of Xperia apps from Xperia X and Z5 Premium and gives the ROM a premium feel. It also comes with some of the best Xperia features like Xperia camera add ons and plugins, widgets, Xperia live wallpapers, ringtones and lot more.

Quark™ Fluid UI
ROM's UI is very creatively designed to give the best user experience without compromising the performance of the ROM. Much work has been done on touchscreen responsiveness and smoothness of interface. It also includes beautifully designed wallpapers and icons to give a supreme look and feel to your phone.

Quark UI gives you a feel of Android N (Noughat), though it is based on Lollipop 5.1.1.

QuarkOS 3.0 Fluid UI

QuarkOS v1.0

Quark™ extended features
QuarkOS also includes some remarkable features like colour enhancement and Xperia™ Image Enhancement technology.
It supports smart gestures as well as screen off gestures.
Yureka camera has been fine tuned to provide best pics even in low light.
It also includes other features like install apps directly to SD card, button setting, adblocker etc.

Quasar™ Atmox Maxx® Sound
QuarkOS is powered by Quasar Atmox Ultimate Sound System Maxx Edition. You’ll definitely feel the difference.

This version of Quasar Atmox SE includes:
Dolby Atmos®
Viper’s Audio
Xperia™ Music + visualizer
Deep buffer + Sony beats effect
xLOUD and Clear Audio+
Sony hi-res resampler
Quasar additions
Quasar AtmoX 2.0 Sound

Best Camera Quality
QuarkOS™ packs in it the best Xperia camera addons and apps with Image Enhancement Technology. It comes with original CoolUI camera which gives an outstanding performance for Yureka.

Quark™ Supreme Optimizations
Quark™ optimizations gives you the best battery backup even with WiFi and LTE services always turned on. Performance has also been optimized for quick response and easy multitasking.

More Screenshots from QuarkOS v2.0

QuarkOS™ 3.0 New Features

QuarkOS 3.0 New Features

Quasar Visualizer

How to Install

  1. Download the latest build of QuarkOS ROM
  2. Reboot to TWRP Recovery
  3. Wipe data, system, cache and dalvik cache from advanced wipe menu
  4. Flash the QuarkOS ROM
  5. Flash Yureka VoLTE Modem (*optional | if you are using AOSParadox or any other VoLTE ROM then no need of this step)
  6. Reboot (It may take up to 15 mins for the first boot.)
  7. After the ROM boots, complete the setup and then open Settings >> Quark™ Additions >> Quark™ Customizations and then open all the sub-settings one by one to fix a Settings default value glitch. (Only for QuarkOS™ 3.0)
(N.B. If you facing VoLTE problems then make your first boot with JIO sim)


QuarkOS v3.0 Official Stable (Android 5.1.1) ROM for Yureka and Yureka Plus


Size: 773.8 MB

Note: Gapps and SuperSU are included in the ROM

Older Versions:

QuarkOS v2.0 Official Stable (Android 5.1.1) ROM for Yureka and Yureka Plus

Size: 787.8 MB

QuarkOS v1.0 Official Stable (Android 5.1.1) ROM for Yureka and Yureka Plus
Size: 815.5 MB

Bug Fix for QuarkOS v1.0
SystemUI Quick Settings Detail Header UI Distortion Fix (by @Sanjeet990):
(Special thanks to @Sanjeet990 for this SystemUI fix :) )

1080P Bootanimation Patch for Yureka Plus:

VoLTE Modem (Recovery Flashable):
Non-VoLTE Modem (Recovery Flashable):


QuarkOS v3.0 Official Stable (13.03.16)

 - Improved performance and SOT
  • Added GovTuner
     • Added mpdecision tweaks
     • Removed loadshifter mod as it was not working well
      • Added Quark Optimization Engine (init.d)
  + fstrim cache, data and system on boot
  + governer optimization
  + process tweaks
           + zipalign on boot
 - Improved camera performance
 - Removed AR Fun and Info Eye camera add-ons (you can easily download them from apkmirror)
 - Changed clock and calendar
 - Fixed illegible SMS text issue
 - Improved Quark Fluid UI (now more colorful)
 - Themed package installer
 - Modded Light Manager app to fully support QuarkOS
 - Now supports unlimited notification led colors
 - Added dark clock widget
 - Fixed low button backlight issue
 - Improved screen brightness
 - Added system app remover in settings (much demanded)
 - Fully fixed no ringtone and message tone issue
 - Added ambient display (much demanded)
 - Added HeadsUp enable/disable and timeout settings
 - Removed Pie Control, App Sidebar (obsolete)
 - Removed app autostarter (confusing app for newbies, users can download from playstore)
 - Improved Image Enhancement for ARM64 architechture
 - Removed some live wallpapers (less used)
 - Added QuasarAtmoX™ v2.0 Ultimate Edition
  • Updated Viper's Audio to v2.5.0.5
  • Improved Dolby performance
  • Improved Xperia audio and resampling
 - Added Quasar Lockscreen Music Visualizer (awesome)
  • Circular Bars
  • Vibrating Line
  • Top Bottom Visualization
  • Circular Wave
  • Colored Bars (with lava lamp)
  • Cyanogenmod style

 - Added Quark™ Customizations
  • Statusbar
  + Four Battery Icon styles to choose (Quark, Xperia, Circle and AOSP)
  + Right and Left clock positions
  + Change Wifi icon color
  + Change signal cluster color (separately for each SIM)
  + Show/Hide Notification icons
  + Double tap to sleep (toggle)
  • Navbar
  + Enable/Disable Navigation bar
  + Enable/Disable navbar 3 dot menu button
  + Hardware button backlight control (enable, disable, enable when screen on)
  • Lockscreen
  + Analog Clocks (Standard, Sony, Quark)
  + Vertical Clocks (Quark, Xperia various styles)
  + Horizontal Clocks (Quark, Xperia various styles)
  + Enable/Disable Alarm text
  + Enable/Disable Lockscreen Album Art (while music playback)
  + Enable/Disable Carrier text (Only SIM1, Only SIM2, both, none)
  + Color Carrier text (separately for each SIM)
  • SystemUI
  + Enable/Disable Statusbar Ticker Notification (soft reboot required)
  + Show/Hide brightness slider in notification panel
  + Color recents clear button
  • Fonts
  + Used best font changing app
 - Updated MiXplorer
 - Updated Gapps
 - Updated other apps (Music, Gboard, Light Manager etc.)
 - Added Podcast to Music
 - Added MIUI Calculator
 - Added QuarkOS™ wallpaper collection
 - Added minimalist launcher (Evie)
  • iOS like unified search
  • Pixel minimal design
  • Icon Pack Support
  • Gestures
  • And lot more
 - Removed move app to SD Card settings (didn't work properly)
 - Fixed some UI glitches
 - Revamped 'About ROM' section in settings
 - Improved stability
 - And many small things here and there.

QuarkOS v2.0 Official Stable (18.12.16)

- Fixed UI glitches and distortions
- Tweaked power usage so no bootloops now
- Added new smart gestures
- Added OmniSwitch and Pie Control
- Added DPI control
- Added material power menu with APM
- Added app sidebar
- Added network traffic monitor
- Added OxygenOS camera support
- Added zipalign, init.d scripts and build.prop tweaks
- Added loadshifter mod
- Added dynamic navbar mod
- Added new FM Radio
- Added conference call support
- Added button backlight controller
- Added conference call support
- Added Boost+
- RRO Layers supported
- Humongous battery backup
- Changed launcher with themes support
- Changed keyboard to Gboard
- Removed some less useful apps
- Removed no sim icon from statusbar
- Improved Quark Fluid UI
- Added flat design with Pixel navbar
- New workaround for LED notification
- Improved camera performance
- Improved overall performance
- Fixed Call recording
- Fixed Visualizer
- Fixed Calender sync
- Fixed Smart Control
- Fixed no ringtone issue
- Fixed About ROM settings
- Fixed Sony Clock widget fonts
- Added MuViz
- Added new Clock, Calendar and other apps
- Added fstrim
- Updated apps
- New bootanimation
- And lot more...discover yourself

Apps Removed in QuarkOS 2.0:
Sticker Creator: https://play.google.com/store/apps/details?id=com.sonymobile.androidapp.cameraaddon.stickercreator
Motion Shot: https://play.google.com/store/apps/details?id=com.sony.motionshot
AR Fun: https://play.google.com/store/apps/details?id=com.sonymobile.androidapp.cameraaddon.arfun
Social Live: https://play.google.com/store/apps/details?id=com.bambuser.sociallive
Info-eye™: http://www.apkmirror.com/apk/sony-mobile-communications/info-eye/info-eye-1-9-09-release/info-eye-1-9-09-android-apk-download/
(You can download these apps from the links provided if you like)

QuarkOS v1.0 Official Stable (20.11.16)

- Initial release...


Users who are not able to get VoLTE and Video Calling in this ROM or any other ROM check out this thread by @Sanjeet990 -


Mods for QuarkOS™ 2.0

Some supported Xperia/Asus apps you can download:

Xperia Home
Xperia Keyboard
Xperia Calendar
Xperia Sketch
Xperia Movie Creator
More Xperia Apps

Asus SuperNote

H2OS Launcher


OxygenOS Camera


Enable/Disable Dynamic Navbar Mod


Flash "QuarkOS_Navbar-Enable.zip" to enable the navbar >> Reboot >> Open Display settings >> Key backlight control >> Check "Lock off bklight"

How to disable?? -- It's your common sense. Don't ask me... :p

FAQ for QuarkOS™

Q. How to enable led notifications for apps when phone is not docked?

Ans: Open the provided Light Manager app from the app drawer >> Give it notification access when prompted >> Add your favourite app >> Check "Enable" >> Change Flash Rate to "None" >> Color to Red or Green >> Done.

Q. How to enable double tap to wake?

Ans: Go to Settings >> Smart control >> Wake-up gesture >> Enable Wake-up gesture >> Check "Double-tap to Wake"

Q. How to enable double tap to sleep?

Ans: Go to Settings >> Smart control >> Buttons >> Double tap action >> Turn screen off. After this double tapping the home key will sleep the screen.

Q. How to use GovTuner in QuarkOS 3.0?

Ans: Install Terminal Emulator app and open it. Use the following commands one by one:
Then select your desired profile from the list (Battery | Balanced | Performance)

Q. How to enable Google Search widget in recents in QuarkOS 3.0?

Ans: In QuarkOS 3.0 you may find that Google Search widget has been removed from recents screen. This happened because Google Search got embarrassed because of awesome unified search widget of Evie, just kidding :p

So, to get it back install Google Now launcher (or any other) and then make it default and disable Evie launcher from Settings.

Then reboot your device. You will see that Google search in recents will come back happily.

Then you can revert back to Evie launcher.

Bugs and Workarounds

Known bug: Led notification light not working for notifications when charger is not connected. [But works with USB plugged]

Workaround: Use Light Flow Pro app (or LED Blinker app) to set led notification for your favourite app. Set the LED to “Always on”.

Limitation: Since the ROM is fully based on AOSP, there is no native support for NTFS and exFAT file systems.

Workaround: Use Paragon NTFS, ExFAT Mounter app from Google Play.

Some Tips

The ringtones are set to 'none' by default. So select your favourite ringtone after flashing. ("Sound picker " app is preferred)
Use Xperia Camera Widget to access all the Camera addon apps.


Huge thanks to YU Televentures and Coolpad
Special thanks to Sony
Special thanks to HTC Corporation
Special thanks to ASUS
Special thanks to Temasek
Special thanks to CyanogenMod
Special thanks to Hexagon Team
Special thanks to Evie Labs Inc.
Special thanks to OmniROM
Special thanks to AOSParadox for base Wallpaper app
Special thanks to @venkat kamesh for his awesome mods and guides
Special thanks to @Shoaib05 for kernel and loadshifter mod
Special thanks to @Sanjeet990 for various help
Special thanks to @androidexpert35
Special thanks to @xperiaz2
Special thanks to @manis99
Special thanks to @diyun for iFont
Special thanks to @HootanParsa for MixPlorer
Special thanks to @Debuffer for Gov-Tuner
Special thanks to @Adi Aisiteru Reborn for visualizer
Special thanks to @noname81 for LMT launcher
Special thanks to @chornerman_studio for DPI Changer
Special thanks to @zst123 for multiwindow sidebar
Special thanks to @gohel.vishal for Gexture
Special thanks to QuarkOS™ Official Group
Also thanks to other various YU Forum/XDA members who apparently helped me :)

A heartily thanks to my testing team:
@sain (a.k.a. @sain25)
@Shree Gowtham
@Prasoon Mehra (a.k.a. @prasoonmehra)
@The_Guy (a.k.a. @_ghost)
@Prashant Maheshwari


Kernel Source: https://github.com/Shoaib0597/Velocity_MSM8916
ROM Source: YU Official VoLTE Firmware for YU5510A-LP

For Devs and Advanced Users

After hours of hardwork I have finally made patchable source of QuarkOS. Here it is:


This source contains all the history of methods that I used to make the ROM.

Now Devs of different devices can try making with different bases like MM, N, MIUI, Lineage etc.

Now users can know the secret of making ROMs by modding. And there's lot to learn.

I hope to see QuarkOS for other devices too. :)

DevDB Information

QuarkOS v3.0 Stable ROM [ARM64] for YUREKA and YUREKA Plus

ROM Information

ROM Developer: Nitesh Prasad a.k.a nitesh9
ROM OS Version: 5.1.1 Lollipop (ARM64)
ROM Kernel: Linux 3.10.x
ROM Firmware Required: 5.0.x/5.1.x/6.0.x Marshmallow and up (ARM64)
Based On: YU5510A AOSP ROM (Official)

Version Information

Status: Stable
Current Stable Version: QuarkOS v3.0 Stable ROM
Release Date: 13.03.2017

How to Choose Best Headphones by Looking on Specs


How to choose best headphones on the basis specifications • Earphones Specifications Explained • How to know if headphones have good Bass, Clarity and Treble

There are variety of headphones (or earphones) available that it becomes difficult for us to choose the right one that suits our purpose.

We may sometimes find that a budget headphone may give a better output than a costly one. This is because everyone’s taste is different, some people like bass and some treble, some love loud music and some people love soothing music. So every headphone may not suit everybody.

So how to choose which headphone is best for you. For that first let’s discuss the different types of headphones and their features. Later on we will discuss in detail about different specs of a headphone like frequency range, sound pressure level, impedance etc.

Types of Headphones

There are basically three types of headphones.

1. On-ear Headphones

On-ear Headphone
On-ear Headphone
On-ear headphones or supra-aural headphones are those headphones which rest on the top of the ear. They are basically more light weight than over-ear headphones and are easier to carry. As they sit on the ears, there may be some leakage of sound and may not provide noise isolation as good as over-ear headphones. Sometimes they may be tight and my squeeze the ear too tightly to make it uncomfortable for you to use it for a long time. So, it is crucial to choose the correct pair that fits perfectly.

2. Over-ear Headphones

Over-ear or circum-aural headphones enclose the whole ear. So they are more comfortable for a long term usage. As they encase the entire ear, there is no leakage of sound so it gives better noise isolation. Also because of this bass is better in these type of headphones. Since they are bigger in size they are less portable than other type of headphones.

These type of headphones are further divided into two types:

Closed-Back Over-ear Headphone
Closed-Back Over-ear Headphone
Closed Back: These are most general type of circumaural headphones having the back of earcups sealed. Because of this it provides superior noise isolation and more clear audio.

Open-Back Over-ear Headphone
Open-Back Over-ear Headphone
Open Back: This type of over-ear headphones has the back of its earcups open. These type of headphones have more sound leakage but sometimes they are preferred by the audiophiles as they provide more natural sound, they feel.

3. In-ear Headphones

In-ear Headphone
In-ear Headphone
In-ear or canal headphones fit inside the ear canal. Since they fit inside the entrance of the ear, they provide better noise isolation and good quality music. These type of headphones come with different size of tips, so you need to choose the one which fits perfectly in your ear canal otherwise it may be loose and will reduce noise isolation.

These were the different types of headphones, now let’s discuss about the different technical specifications which we see on the box of headphones or on its site.

Technical Details or Specs

Frequency Range and Frequency Response

Human audible frequency range is 20Hz to 20KHz. Different headphones come with different frequency range (e.g. 17Hz – 22KHz, 20Hz – 22KHz etc.). While choosing a headphone it should be noted that lower the minimum frequency more will be the bass and higher the maximum frequency more will be the treble. And the response or output that we get at different frequencies is called frequency response. Some headphones contain a chart for frequency response. By studying the chart, we may understand about the output of the headphone.

Driver Size

Driver is the most important component of a headphone which creates the sound. It converts electrical energy into sound energy and has a diaphragm which vibrates to produce the sound. It is generally regarded that larger drivers produce better quality audio, but it is not a fixed rule. Size of a driver is measured by the diameter of the diaphragm in millimeters. So, a driver size of 40mm or above is good for an over-ear headphone. The in-ear headphones contain a driver of 8mm to 12mm. Some in-ear headphones contain two drivers, one for handling bass and other for mid and high frequencies. And some premium in-ear headphones contain even more than two drives.


Impedance is the electrical resistance produced by a headphone. It is measured in Ohms. Headphones with higher impedance require more power. So, impedance is generally less (below 32 Ohms) in headphones designed for mobile devices. So, headphones for mobile devices use a low voltage and require a high current which sometimes creates a hissing sound. On the other hand, high-end headphones have a higher impedance (above 300 Ohms) which produces clear sound but require a dedicated amplifier to power them.
In some cases, impedance mismatch may also create sound distortions and noise. So, higher impedance headphones should not be used with smartphones and low end headphones should not be used with high-end audio systems and amplifiers.

Total Harmonic Distortion (THD)

In some headphones we may find some sound distortions at higher volume levels. This happen when the diaphragm could not vibrate as fast as required at higher volumes. This creates a sound distortion called Total Harmonic Distortion (THD). Most headphones have THD of less than 1%. Lower the THD better will be the sound output at higher volumes. So, many premium headphones have a THD of 0.5% or sometimes even up to 0.1%.

Sensitivity and Sound Pressure Level (SPL)

Sensitivity of a headphone may be described as its efficiency. Sound Pressure Level indicates the loudness of a headphone. SPL is measured in Decibel SPL per milliWatt. The SPL of most headphones is in the range of 85 – 120 dB SPL/mW. So, higher the Sound Pressure Level of a headphone, louder will be its sound output.

Noise Cancellation

Some headphones have noise cancellation technology. They have a dedicated microphone which records the ambient noise, then creates an inverse sound wave and feed it back into the headphones to effectively cancel out the noise. It works best for constant low frequency noise (like sound of the engine of an aeroplane) but does not work for higher frequency noise (like people talking around).

Noise Isolation

Noise Isolation means blocking external noise by the physical design of the headphone. As we have already discussed before, noise isolation is higher in in-ear headphones and over-ear headphones with closed back.

So how to make the choice?

Understanding a headphone configuration is a much complicated task. But still we may try to find the headphones that best suits our purpose by taking into account the above factors, our environment and the type of music we love to hear. People’s review of the headphone may also become an important factor affecting your decision.

What headphones do you use? How do you choose a headphone?
Did you like the article?
Let me know from the comment below.

Thanks. :)

How to Change the Icon of an Android App

There are millions of android apps in and around the web and each app has its icon. Every developer creates the icon of his app according to his suitability. But we do not find some icons interesting or they do not match to the theme of our android smartphone. So, is there any way to change those icons according to our choice?

The answer is ‘yes there is one very easy way’— APK Icon Editor.

APK Icon Editor

APK Icon Editor is an open source application by which you can edit your APK files downloaded from Google Play or from anywhere else. By using this application you can change the icon of your android app and do a lot of other things (which we’ll discuss later). APK Icon Editor also supports Kindle and Blackberry APKs. Thus, it is compatible with large number of devices. The only drawback of APK Icon Editor is that it is a Windows software so you cannot use it directly on your android device, you have to take help of your PC.

How to Change the Icon of an APK File

Now let’s move on to the main task – ‘how to change the icon of an APK file’. You just have to follow these easy steps:

  1. Download and install APK Icon Editor on your PC
  2. Backup the APK of your Android App using ES File Explorer or AndroZip or other.

  3. Android App with Original Icon
    Android App with Original Icon
  4. Transfer the APK file to your PC or laptop.
  5. Open the APK file with APK Icon Editor software installed on your PC. You’ll see a window like below.

  6. Android app opened with APK Icon Editor
    Android app opened with APK Icon Editor
  7. Select the highest size of icon (here I select XXXHDPI). (You also have to change the ‘Device’ if you are using Blackberry or Kindle)
  8. Right click on the icon and select Replace Icon from the dropdown menu. Alternatively you can also use the shortcut key Ctrl+R.

  9. Android App - replacing icon in APK Icon Editor
    Replacing the icon in APK Icon Editor
  10. Then select the appropriate icon (the icon should of size 192x192 or more for XXXHDPI). If it asks for ‘Resize Automatically’, select ‘Yes’. The icon will be replaced with the new one.

  11. Replacing the icon of Android App
    Replacing the icon of Android App
  12. Then you can either click on the button ‘Apply to All’ (to make all icons from LDPI to XXXHDPI of the current size) or you can manually replace the icons of all sizes one by one.
  13. Then click on ‘Pack APK’ button and transfer the newly generated APK file to your Android Device.
  14. To install this newly modified Android App you first have to uninstall the original app.
  15. Now you have successfully changed the icon of your android app.

  16. Android App with Changed Icon
    Android App with Changed Icon

Drawbacks of this method

  • You have to uninstall the original app to install this modified app; that means you may have to lose your previous data.
  • You will not get automatic updates to your modified android app. You have to manually download the updates from Google Play by uninstalling your modified app.

So, this method is not much useful for frequently updating apps (only if you like to update your apps). But this method is very useful for stable apps or some non-Google Play apps.

N.B.- Use this method for your personal use only.

What More You Can Do With APK Icon Editor

APK Icon Editor is a massive tool by which you can do lot more things. You can also change the name, version etc. of your APK file under the Properties tab. But for this you have to change the mode to ‘Apktool’ by clicking the ‘ZIP’ button in the upper right corner. With APK Icon Editor you can even explore APK contents and see or modify what’s inside your APK file.

Modified Icon and Version of an App
Android App with changed Icon, Name and Version

So, this was all about changing icons and modifying APK files. Enjoy modifying your Android apps!