DAB+ App: (real)zoulou's DAB-Z app (official support thread)

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New member
Apr 7, 2022
Unfortunately TC doesn‘t work either.. I think I have to wait for another solution, hopefully Zoulou finds a way to fix. Until then i‘ll stay with my workaround to use an older Release, customize the look, Update, and then never touch this menu again 😅 but thanks anyway ✌🏼


New member
Apr 29, 2022
Hey everyone,
how is the current state of the "app asks for usb permissions dialog popping up on every start"?
I found some posts here, but they are more than 1 year old and on my HU I get this dialog on every start.


Senior Member
Nov 3, 2016
Greater Area Munich
@sat_rik Status since years is that DAB-Z has all support for USB permission dialog implemented. A one time USB permission popup dialog is normal. When you set the checkbox in the dialog, then your device should never ask again.
If you device nevertheless asks again and again, contact your seller. It is an issue in your device, not in DAB-Z.


Senior Member
Nov 3, 2016
Greater Area Munich
DAB-Z release 1.9.121 BETA

Change log: compared to 1.9.119
* New: Settings Button on Splash screen
* Fix: Android 11 background image not selectable
* Fix: Android 11 storage permission dialog skipped automatically
* Removed legacy libdab.so
* Removed pre-Android-6 deprecation dialog

As announced with 1.9.119, this is the last (planned) release for the 1.9.x line.

libdab.so is gone. No option to choose anymore.
Non-OMRI users will find their station list empty after the update.

Farewell to Android 4.4 and 5.1 users
This is the last version of DAB-Z, which your device will be able to update to.


Dec 12, 2020
stupid question: where i can find older versions?
.117 oder .118

because i have some issues at the moment.
I use FCC Launcher and on the start screen some widgets from FCC to show the radio sation picture and track/perfomer names...
unfortunately at the moment it will not updated both if i change the radio station.
only if i reboot the whole radio unit, then it will work as long as i shut off the radio with ignition (deepsleep)...
then it will no more update the radio station picture and don´t show the track name... until i reboot the radio unit.
and so on...

i tried several older FCC versions with same issue.
DAB-Z is at the moment the .119 version so i will try an older version because it worked in the past :)
(i haven't tried yet the verion .121)


Oct 16, 2014
I've recently installed a new head unit into my car. PX5 based.

I use Agama Car Launcher and DAB-Z. Latest stable version.

For me the audio ducking does not work. Whilst using DAB-Z and my Speed Play (Apple Carplay) app the audio does not duck during navigation, reading messages or using Siri.

I have tried changing the audio channel that DAB-Z used from media to navigation, unknown etc but it is still the same.

Can anyone help with what I need to do?

I can provide any further information that may help if you let me know what is required.


Senior Member
May 30, 2006
Hi - I have this DAB receiver https://www.amazon.co.uk/dp/B09VBS6TNW (branded "Hikity")., which works only in the head unit's 6-pin USB socket. (which unfortunately I need my phone to work with Android Auto). Do all USB DAB receivers need a 6 pin socket (actually I think only 5 are used), with the extra OTG wire? If so there any HUB that will let me use the DAB and phone at the same time?


Senior Member
For me the audio ducking does not work. Whilst using DAB-Z and my Speed Play (Apple Carplay) app the audio does not duck during navigation, reading messages or using Siri.
Does ducking work for any other app on your HU (any music player, that wasn't preinstalled on HU)?
I can imagine that your HU manages sounds from SpeedPlay in a nonstandard way, so apps do not get information that the audio channel is busy...


Senior Member
May 30, 2006
well, these differences are merely to split host and device modes.
Then use your USB socket coming from 6pin connector, and use USB hub in between (maybe better powered hub, as phones normally pull much current from USB)
Well I tried 2 hubs, one powered, one not, with only the DAB unit connected, but it wasn't recognized/ found by DAB-Z with either hub. I don't understand why not, and why it doesn't work in the 4 wire socket


Senior Member
May 30, 2006
Apparently your 4wire socket supports only device mode, and DAB receiver is like a flash drive - it should be connected to host (thus the DAB receiver acts like Device itself).
read https://en.wikipedia.org/wiki/USB_On-The-Go for details about your 6-pin connector with USB socket - it seems that this port is working in Host mode.
I'm confused. I thought 4 wire was the USB standard. If like you said most DAB players work with 4 wire standard, what's different about my head units 4 wire port/socket? A dashcam works in that port/socket, by the way. Is that device mode?


Oct 16, 2014
Does ducking work for any other app on your HU (any music player, that wasn't preinstalled on HU)?
I can imagine that your HU manages sounds from SpeedPlay in a nonstandard way, so apps do not get information that the audio channel is busy...
The only other thing I have set up for audio ducking is the reversing camera. When I put the car into reverse the camera comes on and the volume of the dab-z app drops to 50% as expected

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  • 62
    Last updated: 2023-05-11

    DAB-Z v2.x thread is here

    This thread is discussing the (now "legacy") DAB-Z v1.x versions...

    Release notes of currently active release on Google Play 1.9.127
    Release notes of currently active PUBLIC BETA on Google Play: 1.9.127
    If you want to become beta user, subscribe in Google Play or open this link from the device : https://play.google.com/apps/testing/com.zoulou.dab

    The app is available in Google Play named DAB-Z with package name "com.zoulou.dab".
    It can be installed in parallel to any original preinstalled DAB+ Player.

    Get DAB-Z on Google Play

    Get previous versions on Apkpure

    Compatible devices:

    all DAB USB dongles with VID/PID = 16C0/05DC (decimal 5824/1500) ("VOTI", "Van Ooijen Technische Informatica", "shared ID for use with libusb", "[email protected]")
    Examples (for sure not complete!)
    Joying DAB+
    Pumpkin Y0251
    Hotaudio Dasaita DAB+
    (and dozends or hundreds more, they are all quite the same, if not equal.)
    Use this link to find out more


    * Any SDR ("Software Defined Radio") devices (e.g. based on Realtek RTL2832U R820T)
    * Fulljoin adapter
    * Dension DAB+U
    * Dasaita DAB box

    Frequently asked questions FAQ:

    DAB-Z's expected behavior regarding Play/Pause, Mute/Unmute, Navi App announcements

    Q: Does DAB-Z support fallback to FM Radio?
    A: No and it is not planned due to technical reasons.

    Q: Why do some stations appear several times in the list but have all the same content?
    A: This is an annoying behavior of the broadcasting stations. DAB-Z does not lump them together to give the user the choice to pick one into the favorites list that has the best signal strength.

    Q: Is it possible to add a sort of buffer to bridge short reception outages and therefore interruptions of audio, e.g. while driving through a tunnel?
    A: No. DAB is a real-time, live (but digital) broadcast (same as old-style TV and FM radio), in contrast to streaming. The broadcasted data that is lost due to missing reception cannot be recovered or re-requested later. Also, DAB cannot be read-ahead in contrast to streaming. An app therefore cannot create a buffer of "future" data in order to have data locally, which can then be used to bridge the loss of reception.

    For testers ...​

    ... that want to actively support me and help everyone to have a better DAB-Z app:

    If you encounter an issue with DAB-Z, I will maybe ask you to provide a) logcat logs or b) raw recordings.

    a) logcat logs are created by pressing the logcat button in DAB-Z Settings -> Info (at the very bottom)
    A zip file is created and you will be able to choose what to do (send via Email, add to Google Drive, etc...). Get this zip file to me somehow.
    If I additionally ask you to enable "OMRI verbose logging", then follow these steps before creating the logcat as above:

    1. Enable Developer Menu: tap 7x on DAB-Z Settings->Info->Version , then go back, a new menu item appeared "Developer options" at the very bottom
    2. Enable OMRI verbose logging
    3. Close DAB-Z
    4. Reopen DAB-Z
    ... reproduce the issue ...
    5. Create the logcat DAB-Z Settings -> Info (at the very bottom)

    b) raw recording are created by this procedure:

    raw recordings are done using this procedure:
    1. Enable Developer Menu: tap 7x on Settings->Info->Version , then go back, a new menu item appeared "Developer options" at the very bottom
    2. Enable OMRI raw recording (you don't need to activate verbose logging)
    3. Close DAB-Z (raw recording enable/disable requires a restart of DAB-Z)
    4. Reopen DAB-Z
    ... reproduce the issue ...
    6. Go to DAB-Z Settings and disable OMRI raw recording. Restart DAB-Z again.

    Afterwards, files with ending .raw exist in:
    <internal memory>/Documents/DAB/rec/
    Download them all from the head unit, zip them and send to me.
    Release ZOU-DAB+171119 "Master Piece"

    Release of the "Master Piece" version of the DAB+ App mod.

    Download: REMOVED


    Credits for translation to Norwegian goes to again to XDA member @[email protected]
    Credits for translation to Italian goes to china-rns.com member John Dai

    Changes (see also Changes.txt from the download):

    - Station logos
    Station logos can be downloaded from Volkswagen for >20 countries across Europe and automatically installed to a User accessible location. More than one country can be installed. User can add own station logos in subfolder "<extStorageDir>/DAB/logos/user" in JPG or PNG format. No width/height restrictions for the logo. The app will automatically scale to fit.
    Settings allow to enable/disable showing station logos in station list and in Slide Show area. Scaling can be limited to 1x,2x,3x if needed.
    Settings list any issues in finding a matching logo for a certain station. The search is based on the station name. If no exact (substring) match can be found in the list of logo files, then a default logo is presented. The User has to fix this by renaming logo files or adding additional logo files outside(!) of the DAB app using a File Manager.
    - Layout:
    * new button icons
    * button bar moved from left to right side to gain more space for the slide show area
    * Changed the "logic" of the favorites button: Shows what will happen when pressing it, not what the current status is.
    * new "radio.png" logo. Using now a new DAB logo used in Germany (www.digitalradio.de)
    * the background boxes are not disabled by default. Can be reactivated in Settings.
    * General layout optimization for
    - 800x480 @ 320 dpi
    - 800x480 @ 240 dpi
    - 1024x600 @ 320 dpi
    - 1024x600 @ 240 dpi
    - Removed the previously added "Large SLS" activity. Replaced with an animated fade out of the station list.
    - Added an option to automatically hide the stationlist after a selectable timeout.
    - Added Audio format (MP2 or AAC) and Sample rate (44,1 or 48 kHz) to Station details. As before in the Large SLS, still accessible via "flipping" the slide show picture.
    - Added an option in Settings to move the App to background when the DAB App was started by the "USB device attached" event. Useful eg. when using certain launchers.
    - New logo in the notification bar.
    - Settings->Info shows the reason why the DAB App is running: Either started by "LAUNCHER" or "USB DEVICE ATTACHED"
    - Settings->Info shows the screen resolution and density (e.g. 1024x600 @ 160 dpi)
    - When scanning with type "update", old stations no longer received are now deleted. The favorite setting will be kept.
    - Added Italian translation. Thanks to John Dai @ china-rns.com

    - Replaced old "Connecting..." behaviour with a completely new implementation
    - Audio recording now stored in <extStorageDir>/DAB/rec/ (instead of <extStorageDir>/dab_rec/)
    - Fixed: Channels "10N, 11N and 12N" not shown in station details
    - for developers: BroadcastIntent generation is now disabled by default. Can be reactivated in Settings.
    BroadcastIntent definition has changed w.r.t. "artist", "track" and "playing". See change documentation in BroadcastIntent-definition.txt

    Note that the high pitch sound issue is not fixed in the 171119 release.

    Video tutorial for station logo download from Internet:

    Video tutorial for adding own logo pictures :
    Release ZOU-DAB+180804 "Master Piece Maintenance Release 5"

    Release of the "Master Piece Maintenance Release 5" version of the DAB+ App mod.


    Download: http://bit.ly/2Kqp7HB
    (Please only share the bitly link with others)

    Changes (see also Changes.txt from the download)

    - BroadcastIntent: added slsBitmap which contains currently displayed logo or DAB slideshow picture
    Goal: Allow launchers (e.g. FCC Car launcher) to display album art
    INFO: DAB App now also has a fairly complete implementation of Android's android.media.browse.MediaBrowserService interface
    This allows for using pure Android APIs to view metadata instead of using the proprietary BroadcastIntent
    - Add buttons for PREV and NEXT to Notification and use Media style notification
    - PREV/NEXT steering wheel behavior can be swapped in Settings->General
    - Fixed: Volume adjustment in Settings->Audio is lost after station change
    - Fixed: After several station scans, App completely fails to work until re-install.
    - Fixed: Duplicate entries in station list
    - Removed feature to delay the USB connection on automatic start, which was introduced with ZOU-DAB+180210
    - Removed option to avoid that DAB App is started twice from Settings->General. This is now avoided by using Android manifest launchMode=singleTask
    - Removed feature to download a country-specific station logo zip file and automatically extract it.
    Note: You can still copy an extracted folder of such station logos to /DAB/logos/ folder and after pressing "Sync" button in Settings->Station Logo the logo files will be scanned for a match between filename of a png/jpg file and the name of a station.
    Release ZOU-DAB+180618 "Master Piece Maintenance Release 4"

    Release of the "Master Piece Maintenance Release 4" version of the DAB+ App mod.


    Download: REMOVED

    Changes (see also Changes.txt from the download)

    - Fixed: Adopt Station Logo download to new VW website
    - Add a button to Settings->Info to show hints picture about how to use the UI
    Release ZOU-DAB+170909

    Release of my next major version of the DAB+ App mod.
    This is not the "master piece" release yet.

    Download: REMOVED

    There are (again) two versions of the App:
    a) the "normal" one
    b) one with no usb_device_filter.xml included, which makes Android remember already granted access of DAB+ App to the USB DAB device.
    However, Android then also starts the DAB+ App whenever it finds the USB DAB device as newly connected, which is the case when you power on the
    head unit.
    Some people don't want that the DAB+ app starts automatically when the DAB USB device is detected at startup. This is the reason why this version exists.
    Note: When running on Android >= 6, this version will most likely ask for permission to access the USB device at *every* start of the app.

    Credits for translation to Norwegian goes to XDA member @[email protected]

    Changes (see also the Changes.txt from the download):

    - Most (not all) of the texts are now available in: English, Deutsch and Norsk bokmål
    Credits for translation to Norwegian goes to XDA member [B @[email protected][/B]
    - Swipe to right in station list shows a delete button. On swipe left again, delete button disappears. On click on delete button an alert dialog appears to allow the user to confirm. Deletion of stations cannot be un-done. A new scan is needed to get the station back.
    - Additional info (channel and ensemble name) in station list can be deactivated via Settings->Layout
    - "Service Following" feature can be activated in Settings->General. NOTE: This is treated as "Experimental". This activates the original app functionality, which was always in the app, but was not connected to the UI. Do not blame me if you find it not working.
    - Audio recording button can be activated via Settings->General
    - The borders around the slide show picture and around the station list can be deactivated via Settings->Layout
    - A click on the slide show picture creates a large version of the picture. I call this "Large SLS".
    - Swipe left or right on "Large SLS" switches between the picture and some detailled info about the current station.
    - When starting a re-scan one can choose now between "Replace all stations" and "Add new stations"
    - The app sends out broadcast intents containing all information that you can also find on the screen.
    The definition of the intent is in file "BroadcastIntent-definition.txt"

    - Fixed: no audio after standby when using NoKill mods.
    - Fixed: when USB connection suddenly drops, the App remains active but with no audio. My fix is to close the app.
    - Settings layout improved
    - Notification now contains station name instead of "Make DAB+ great again ..."
    - A second way to enter the settings screen is via the "Large SLS" screen
    - Optimization of memory allocations. Results in less Garbage Collector runs, which is good for overall performance.

    Main.PNG Large_SLS.jpg
    ChannelDetails.PNG Credits.PNG

    Videotour through the DAB+ App: