Database Users

HD2 Widcomm bluetooth stack and AUDI's hands-free pairing

Hello everybody!
I been always having difficulties pairing HTC devices with my AUDI A6 (2005) hand-free using bluetooth (HTC Diamond, HD, and now HD2). The phones will pair but neither contacts or recent calls would appear in my car's display (MMI)
I used to solve the problem using a software extension for the bluetooth stack called JETWARE MOBILE, but HD2 uses WIDCOMM's bluetooth stack instead of Microsoft's one, and JETWARE software won't support it.
I've found a thread about pairing with a volvo hands-free where have been found a solution (changing WIDCOMM registry key "SupportedFeatures" and others)
Anyway it appears to be a volvo's specific solution so it doesn't work for my AUDI (I still can't get any contacts, recent calls, etc. transfered to my car using those)
Does anybody have an idea?
Thanks in advance

Sounds like Audi does not support the handsfree profile HD2 uses. What about using sap (sim access)?
The best way would be to ask your Audi Partner about a solution.
I bet they have an own SAP bluetooth device as i read that Audi uses Handsfree on default and SAP as an option for more money.
It is always a matter of the cars software and not of the HD or HD2.
I own the Mercedes CLC 2008 and i need to buy an extra utility (SAP bluetooth dongle SLR design) for more than 300 €.
Didnt do it till today but i got a new job and def. will buy it when i get the first money.
With SAP it will definately work - also confiremd by several forums i found via google.
BTW: The brother of my wife has a new Volvo V50 and he cant pair his Nokia phone with the cars system but my old HD as my new HD2 too can pair without any problem. I can shuffle through my contacts where he got the same issue as u - but with his nokia phone.

I'm not sure if you've updated the MMI software in your Audi. I had a older software version in my 05 A6 there are 2 disks that will get you to the latest version. I have flawless phone access now. It's like a ROM upgrade for the car.
You can read more about it at www.audiworld.com and check the C6 forum.

rsacipher said:
I'm not sure if you've updated the MMI software in your Audi. I had a older software version in my 05 A6 there are 2 disks that will get you to the latest version. I have flawless phone access now. It's like a ROM upgrade for the car.
You can read more about it at www.audiworld.com and check the C6 forum.
Click to expand...
Click to collapse
I don't really think I've got any MMI updates. I don't even know what version I've got...
I'll ask my dealer to find out.
Thanks

pitaXDA said:
I don't really think I've got any MMI updates. I don't even know what version I've got...
I'll ask my dealer to find out.
Thanks
Click to expand...
Click to collapse
I doubt your dealer will fix it for you unless you are still in warranty and you are having an issue with it.
My dealer didn't want to touch it because like one of these phones if you mess up the upgrade you can brick it.
If you want to take a picture of the SW version and post it or send it to me I can tell you what you have.
Are you in the US?

I forgot to mention if you fry the MMI it is about $2,000 to fix. I was able to get the lastest software installed in about 2 hours.

rsacipher said:
I doubt your dealer will fix it for you unless you are still in warranty and you are having an issue with it.
My dealer didn't want to touch it because like one of these phones if you mess up the upgrade you can brick it.
If you want to take a picture of the SW version and post it or send it to me I can tell you what you have.
Are you in the US?
Click to expand...
Click to collapse
I'm from Spain, little far away from US...
When I took my car to its last service (55.000 miles) they told me they were supposed to apply a software update (I was in a hurry so I told them to came back later... 8 months ago...).
May be that update will also apply to the MMI?
Anyway I'll take the picture and show you the SW version.
Thanks

pitaXDA said:
I'm from Spain, little far away from US...
When I took my car to its last service (55.000 miles) they told me they were supposed to apply a software update (I was in a hurry so I told them to came back later... 8 months ago...).
May be that update will also apply to the MMI?
Anyway I'll take the picture and show you the SW version.
Thanks
Click to expand...
Click to collapse
It's hard to say what they wanted to update, it could have been the ECU or MMI. I found that since I had an early model 05 my software was really out of date. Once I updated it the phonebook and connection worked so much better.

Audi usually supply the latest firmware as part of the navigation disk updates (they auto update when you first put them in).. this is the case for the older RNS-E's and probably the case for MMI too..

rsacipher said:
I doubt your dealer will fix it for you unless you are still in warranty and you are having an issue with it.
My dealer didn't want to touch it because like one of these phones if you mess up the upgrade you can brick it.
If you want to take a picture of the SW version and post it or send it to me I can tell you what you have.
Are you in the US?
Click to expand...
Click to collapse
Hello again
Here I'm posting the pictures of my MMI. It's my first time uploading images so I hope it works.
Thanks again

khughes said:
Audi usually supply the latest firmware as part of the navigation disk updates (they auto update when you first put them in).. this is the case for the older RNS-E's and probably the case for MMI too..
Click to expand...
Click to collapse
May be... but I don't have navigation in my MMI. I actually have the MMI Plus but the navigation module was too much for the value (Tomtom gives me the same except MMI integration for less than 1/10 of the price)
Thanks anyway

dameon12 said:
I own the Mercedes CLC 2008 and i need to buy an extra utility (SAP bluetooth dongle SLR design) for more than 300 €.
With SAP it will definately work - also confiremd by several forums i found via google.
Click to expand...
Click to collapse
apologies to OP, this is slightly off topic...
Hi Dameon12,
I think this works only with the V3 SAP Mercedes module, and this works only with the newer MB audio units.
I have a 2006 Mercedes with Comand and the V2 SAP module, but no success as yet pairing with the HD2 - but I'm open to suggestions!
Thanks,
Eddie

pitaXDA said:
Hello again
Here I'm posting the pictures of my MMI. It's my first time uploading images so I hope it works.
Thanks again
Click to expand...
Click to collapse
Hello rsacipher
Could you please tell me if those pictures were what you ask me to take?
If I get out the software version to search for I might give it a try...
Thanks

Iconia A500 In Dash install help.

Im getting ready to buy a new car. In my current car I have a kenwood single din slide out DVD/NAV unit. Frankly im sick of it.
In the new car (Mazda RX-8) im planning on doing a tablet on the dash. I already have all the technical stuff for that part of the install sussed out.
A cannabalized dock for the power and the audio, after market double din dash kit, Custom built (already sorted) swivel mount in the top din, head unit in the lower din for the audio pass through with an adapter for the steering wheel controls.
What Im stuck on, after much searching, is the software. What im looking for specifically is software to let me link my phone over BT so the when I get a call the tablet displays the info and can be used as a handsfree jobby. would be nice if it could also pass data as well but im not greedy.
It may be easier to use a BT adapter for the head unit itself if such software doesn't exist or isnt possible, and then just use the wifi tether for the data on the tablet for nav and such.
Any help or ideas would be SUPER appreciated.

Tablet Talk... works perfect, u can connect over BT

serviciosmoviles1 said:
Tablet Talk... works perfect, u can connect over BT
Click to expand...
Click to collapse
This looks pretty good for SMS and it says it has caller id. Can you confirm that I can answer the call from the tablet and use it as a hands free?

I use textab same as tablet talk has Cid but u can't answer the call. I also have a flip out indash I use bt to connect it and I can answer calls from the dash touch screen Audio comes trough the 9 speaker system in my car

GRIMLOCKE said:
This looks pretty good for SMS and it says it has caller id. Can you confirm that I can answer the call from the tablet and use it as a hands free?
Click to expand...
Click to collapse
The caller ID works very good but you can not answer the call from your tablet. If you want full phone service in your tablet ( answer and place calls) u can use groove ip assuming that u can give data connection to your tablet from your phone and u have a google number after that u just need forwarding your primary number at your google number and u are ready... sounds difficult but believe me, its very easy... I use this every single day and do not take more of 30 sec

Man I lucked out with sprint, google voice and groove IP, is all I need since my my phone is integrated.
Sent from my Nexus S 4G using Tapatalk

Can you take a picture of the tablet on your dash? Would love to see how it look in the car.

10507 said:
Can you take a picture of the tablet on your dash? Would love to see how it look in the car.
Click to expand...
Click to collapse
I havent actually started any install as of yet. Still waiting on the car.
Funny story. I went to test drive the RX-8 today. It went LESS than stellar.
The car broke down three times in traffic. I got it back to the lot and the salesman still tried to sell it to me. I said get it working and Ill test drive it again...and MAYBE I might think about it. best salesman quote: "Its an automatic, it cant stall.
When I do get the new car next couple weeks/month I will keep you guys updated on the install. Im pretty sure im going to go with the headunit BT.

Can't wait to see it, I like the idea I might opt for kindle fire to mine in my car depending on how stable those devs get it.
Sent from my Nexus S 4G using Tapatalk

you know, I never really considered replacing my radio with a tablet, though I thought of several different ways to mount it separately. I wasn't satisfied with any of my ideas so I'll be checking to see how this one goes. Good luck and take lots of notes and pics.

what is a good way to mount this in a car??

post pics when you get it finished I'd love to see how it came out.
Sent from my SAMSUNG-SGH-I727 using Tapatalk

How to read SMS in car on head unit, from phone using bluetooth?

Ok so I have a 4.4.4 Pumpkin head unit and all stock so far.
I have a ROMed Galaxy S4, I have only a bluetooth connection in the car between the two devices.
I would like to somehow get the SMS on the phone and also be able to read it on the car head unit and respond via head unit?
Which app would suffice?
Would I need to have other connection between the two devices, if so which one?
Thanks

Try "Yaata" on your phone, it has a setting where it can read out the text messages when hooked up to Bluetooth which means hooked up to your car head unit it will actually say everything that comes in
With my back to the rise I'll make my stand

Contra197101 said:
Try "Yaata" on your phone, it has a setting where it can read out the text messages when hooked up to Bluetooth which means hooked up to your car head unit it will actually say everything that comes in
Click to expand...
Click to collapse
I believe this would require you to have the bluetooth app loaded and running to hear it, but I might be wrong.
I solved this problem with Pushbullet, but it requires some sort of tethered internet connection .

w2dhs said:
I believe this would require you to have the bluetooth app loaded and running to hear it, but I might be wrong.
I solved this problem with Pushbullet, but it requires some sort of tethered internet connection .
Click to expand...
Click to collapse
Did you have to use the older version of Pushbullet, or does the new one have android notification mirroring?

hgupta said:
Did you have to use the older version of Pushbullet, or does the new one have android notification mirroring?
Click to expand...
Click to collapse
I only started using it recently but the version in Google Play does notification mirroring. It works very well.

w2dhs said:
I only started using it recently but the version in Google Play does notification mirroring. It works very well.
Click to expand...
Click to collapse
I upgraded back to the full version, and don't see that option. Is that just in the pro version?

In my version 17.7.9, (called "Pushbullet - SMS on PC" in the store,) if I click the 'hamburger' menu, then click SMS, I am presented with some option switches which include 1) "SMS Sync" and 2) "Show SMS notifications from other devices on this device." Enable both on your phone, then do the same on your head unit.

Tablet Talk would do exactly this. I use it to do this exact thing over bluetooth between my phone and my tablet so I can respond to SMS, etc without taking my phone out and just using my tablet.

Wrathlon said:
Tablet Talk would do exactly this. I use it to do this exact thing over bluetooth between my phone and my tablet so I can respond to SMS, etc without taking my phone out and just using my tablet.
Click to expand...
Click to collapse
That looks very promising, gonna check it out. I'd rather not rely on tethering and cloud services.

New TS10 UIS7862 6gb ram 128gb head unit q&a's

So I bit the bullet and bought myself this head unit:
https://a.aliexpress.com/_9JZiHu
Ad stated that unit is 4gb ts8, but unit shipped and arrived is 6gb TS10.
Plugged everything up unit works nice and smooth as expected, but one seriously annoying bug.
Phone connected to HU and when I try to make a phone call I can hear receiver speaking, but they can't hear me.
Head unit does have internal mic. And Mike does work with other apps
I've checked permissions and Bluetooth app does not even request mic permission.
Any ideas? Suggestions? Anyone else got similar issues?
Maybe custom ROMs available etc?
I've managed to enable USB debugging, got passwords for engineering mode, extra settings etc...
Pics of my headunit attached

sciux said:
So I bit the bullet and bought myself this head unit:
https://a.aliexpress.com/_9JZiHu
Ad stated that unit is 4gb ts8, but unit shipped and arrived is 6gb TS10.
Plugged everything up unit works nice and smooth as expected, but one seriously annoying bug.
Phone connected to HU and when I try to make a phone call I can hear receiver speaking, but they can't hear me.
Head unit does have internal mic. And Mike does work with other apps
I've checked permissions and Bluetooth app does not even request mic permission.
Any ideas? Suggestions? Anyone else got similar issues?
Maybe custom ROMs available etc?
I've managed to enable USB debugging, got passwords for engineering mode, extra settings etc...
Pics of my headunit attached
Click to expand...
Click to collapse
Hi there, did you have any luck with this? I've just received the same head unit and found the same problem. I've had a quick troubleshoot but haven't had any success so far. Thanks

coombsee said:
Hi there, did you have any luck with this? I've just received the same head unit and found the same problem. I've had a quick troubleshoot but haven't had any success so far. Thanks
Click to expand...
Click to collapse
I did actually managed to sort it out. Store suggested connecting external mic to 3.5mm plug on the harness that came with head unit. Did that, but nothing changed.
Can't remember exactly what I did, but it's something down the lines of Google Voice setting that it's setup to constantly listen for "hey Google" you have to disable that and than "hey Google" function will only work when you in the maps etc not constantly whilst head unit is on.
If you can't find that setting let me know I'll find it and explain in detail how to do that.
If you have the same issue as me I'm positive that this might be the cause

sciux said:
I did actually managed to sort it out. Store suggested connecting external mic to 3.5mm plug on the harness that came with head unit. Did that, but nothing changed.
Can't remember exactly what I did, but it's something down the lines of Google Voice setting that it's setup to constantly listen for "hey Google" you have to disable that and than "hey Google" function will only work when you in the maps etc not constantly whilst head unit is on.
If you can't find that setting let me know I'll find it and explain in detail how to do that.
If you have the same issue as me I'm positive that this might be the cause
Click to expand...
Click to collapse
That was 100% it. Turned the 'Hey Google' activation off and problem solved. Thanks!

Glad I could help. I remember being frustrated fumming looking for answers for almost a week... With seller being let's say close to useless they did try...
I came across answer online somewhere where same issue was happening with a phone not headunit so thought worth a try and it worked
Anyway, good luck

Could you please give a screenshot of the setting you changed or at least where in the settings the function is.

Go to applications/car settings/ click on the left button ---more/ Google services and preferences/ click on account services/ search, assistant & voice/ voice/ voice match.
First line should say hey Google access your assistant any time you say "hey Google" when your screen is on. Turn this off.
This worked for me. I'll make a short video just in case

ludditefornow said:
Could you please give a screenshot of the setting you changed or at least where in the settings the function is.
Click to expand...
Click to collapse
As promised, sorry video seems a bit blurry phone failing to focus

You have gone over and above. Thank you. Found never have thought to delve that deep into settings for the solution.

I did try to be helpful, because I know how frustrated I was being unable to make a phone call or rather switch to hands free mode on the phone every time there was a call. And it really bugged me. It was obvious that it was software not hardware issue since mic worked everywhere else.
Seller couldn't explain anything either and I ended up ripping my brand new cars dashboard 4 times trying to work it out... So I kind of understand and if it helps somebody else I'm more than pleased with taking 10minutes of my time to do so .
Good day sir

sciux said:
I've managed to enable USB debugging, got passwords for engineering mode, extra settings etc...
Click to expand...
Click to collapse
Would you mind sharing all the codes that you have for the unit please.

ludditefornow said:
Would you mind sharing all the codes that you have for the unit please.
Click to expand...
Click to collapse
extra settings- 123456
developer mode- 7890(**). (**) is your current time. example ..if u try it at 3.00 o'clock just key in 789003. did u get it?

A generic firmware update for TS10 deviced. (link expires in a week - probably worth somebody reuploading)
TS10.1.2_20210106.173438_THEME1.zip
1 file sent via WeTransfer, the simplest way to send your files around the world
wetransfer.com
Place the file in the root of a USB and hit the system upgrade button in the settings.
After the update, go to settings - car settings - extra setting - 123456 - config info - choose the options that were ticked prior to the update (BC6 for me)
The update file is titled: TS10.1.2_20210106.173438_THEME1.zip
Presumably from 6th Jan 2021

Headunit reloaded works very well (for seamless android auto support) on these TS10 units for those who have not tried!

rnakpatel said:
Place the file in the root of a USB and hit the system upgrade button in the settings.
After the update, go to settings - car settings - extra setting - 123456 - config info - choose the options that were ticked prior to the update (BC6 for me)
Click to expand...
Click to collapse
Do you have any screen shots of the UI and the specs with this ROM?
Is it only suitablefor 6gb / 128 gb models or will the 4gb/64gb models also accept this?

rnakpatel said:
A generic firmware update for TS10 deviced. (link expires in a week - probably worth somebody reuploading)
TS10.1.2_20210106.173438_THEME1.zip
1 file sent via WeTransfer, the simplest way to send your files around the world
wetransfer.com
Place the file in the root of a USB and hit the system upgrade button in the settings.
After the update, go to settings - car settings - extra setting - 123456 - config info - choose the options that were ticked prior to the update (BC6 for me)
The update file is titled: TS10.1.2_20210106.173438_THEME1.zip
Presumably from 6th Jan 2021
Click to expand...
Click to collapse
hi rnakpatel , that is my HU detail. can i use firmware that u post for update?

ludditefornow said:
Do you have any screen shots of the UI and the specs with this ROM?
Is it only suitablefor 6gb / 128 gb models or will the 4gb/64gb models also accept this?
Click to expand...
Click to collapse
I can't tell you with confidence what units are compatible. I do note it has settings for screen resolution - this is on my 720p device. I also note I needed to adjust the config info setting to match what my stereo comes with after flashing. The canbus receivers are set up using a database queried online and car specific apps and logos are automatically added.
The update is excellent - everything works very well. Head unit reloaded works with wireless android auto and wired (though a little buggy wirrless)
This

Thanks for this. It is useful.
A couple of questions.
1. Can you run that config again if something is incorrect? If so what is the name of the APK? Or do you need to load the whole ROM again to get to that stage?
2. There is BC6,7,and 8. Do you know what specs they refer to?
3. 20210302_221437.jpg shows a mic gain. Could you please advise on the setting path you used to get to that setting page.
Thanks again.

ludditefornow said:
Thanks for this. It is useful.
A couple of questions.
1. Can you run that config again if something is incorrect? If so what is the name of the APK? Or do you need to load the whole ROM again to get to that stage?
2. There is BC6,7,and 8. Do you know what specs they refer to?
3. 20210302_221437.jpg shows a mic gain. Could you please advise on the setting path you used to get to that setting page.
Thanks again.
Click to expand...
Click to collapse
Can you access the extra settings menu on your current firmware (password 123456)
I would copy the settings for BC6/7/8 from there.
You can update the config as often as you like. This sounds like a risky update, probably not worth attempting if you don't currently have similar software with similar settings.

Another password might be useful for somebody:
Enable USB debug: [email protected]

Trying to identify a UIS8581 unit

Is anyone able to help me identify what unit this is? Its meant to be a higher end unit but finding it really sluggish and also looking at some of the reports its using > 6GB of ram OOB out of 8GB (Not sure how the 2GB unit would have worked) .
Sometimes when turning it back on from standby when playing music etc its really jumpy as its its doing something in the background. Anyone got any recommendations on apps to show what using up all the CPU?
It appears to be a UIS8581 based unit, I have run the HWGetinfo tool on it but its reporting its not a FYT unit.

Post Android system information, including MCU version

The version is retuned as "ZLH_AD_OS_1.24" and the MCU "ZLH_QXLA20830A_Q5H0_8581_13"

Rob_Quads said:
The version is retuned as "ZLH_AD_OS_1.24" and the MCU "ZLH_QXLA20830A_Q5H0_8581_13"
Click to expand...
Click to collapse
This is a completely known unit in here. Try search yourself in this forum for ZLA_ you won´t find anything.

Bit harsh - I have been search but how am I meant to know to search for ZLA not ZLH? Also, searching for "ZLA_" returns a total of 1 hit, a google search for `XDA developers "ZLA_"` also returns just a couple hits not in this forum?

I'm also with the same thing.

Rob_Quads said:
Bit harsh - I have been search but how am I meant to know to search for ZLA not ZLH? Also, searching for "ZLA_" returns a total of 1 hit, a google search for `XDA developers "ZLA_"` also returns just a couple hits not in this forum?
Click to expand...
Click to collapse
ZLA was a typo... sorry.
My posting was not meant to be harsh, but this unit is really completely unknown on XDA.

Yeah that looks like the BMW equivalent to mine with a slightly different CPU
Bhold89 said:
I'm also with the same thing.
Click to expand...
Click to collapse

Talking with the seller, mine was sold by COIKA.
It seems that it follows some patterns that are very similar to other HU's, you just need to make the following to update for example, the boot logo:
Folder structure:
- HUTUpdate
- OS
- bootanimation.zip
- logo.png
- upgrade.en (empty file)
- upgrade.system (empty file)
So, if you find other examples of HU types that are Android-based, this may work.
To upgrade the MCU is
- HUTUpdate
- mcu
- upgrade.mcu
- BMW_8581.bin
I was trying to make backups with other tools, but no success yet.

BMW_OS_8581_1920_720_1.86.zip
drive.google.com
This worked for me as an update, but I have a BMW. Hope this helps!
Just unzip the HUTUpdate to a blank USB

simonb123 said:
BMW_OS_8581_1920_720_1.86.zip
drive.google.com
This worked for me as an update, but I have a BMW. Hope this helps!
Just unzip the HUTUpdate to a blank USB
Click to expand...
Click to collapse
Which HU do you have?

I have also an UIS8581 Unit von Coika. I have software version ZLH_AD_OS_1.86, and MCU LZH_qxha20830A_Q3H0_8581...
I have also some problems... the bluetooth does only work as a headset. you cant switch it on and use it as a normal conection for apps.
Once you switch to original system and then back, all apps are closed( spoitify etc) you need to restart them...
also my sim does not work at all, cause there is no APN setting in the system. once i try to enter it it says user is not able to change settings...
all in all the system is nor really well programmed and has lot of bugs.
If there is anyone who can help with get all the normal functions back pls contact me?
Best regards
Thomas

Bhold89 said:
Which HU do you have?
Click to expand...
Click to collapse
MTK8581a 8/128 for BMW

Tom1386 said:
I have also an UIS8581 Unit von Coika. I have software version ZLH_AD_OS_1.86, and MCU LZH_qxha20830A_Q3H0_8581...
I have also some problems... the bluetooth does only work as a headset. you cant switch it on and use it as a normal conection for apps.
Once you switch to original system and then back, all apps are closed( spoitify etc) you need to restart them...
also my sim does not work at all, cause there is no APN setting in the system. once i try to enter it it says user is not able to change settings...
all in all the system is nor really well programmed and has lot of bugs.
If there is anyone who can help with get all the normal functions back pls contact me?
Best regards
Thomas
Click to expand...
Click to collapse
Hi i have the same unit on my audi q3 with the same firmware 1.86, also i have problem with bluetooth but i want aks you if you turn off the original bluetooth of your car ? Do you use zlink for carplay/android auto? Thanks

Mikdiba86 said:
Hi i have the same unit on my audi q3 with the same firmware 1.86, also i have problem with bluetooth but i want aks you if you turn off the original bluetooth of your car ? Do you use zlink for carplay/android auto? Thanks
Click to expand...
Click to collapse
I use my phone via original Bluetooth on the car. I don't use zlink anymore. As I have the headunit online it makes it easier to use gmaps etc directly.
Do you have a SIM card installed? Does it work? My one does not connect as there is no apn and I cannot set new one. Did you bought it from coika?

Tom1386 said:
I use my phone via original Bluetooth on the car. I don't use zlink anymore. As I have the headunit online it makes it easier to use gmaps etc directly.
Do you have a SIM card installed? Does it work? My one does not connect as there is no apn and I cannot set new one. Did you bought it from coika?
Click to expand...
Click to collapse
i use only zlink...because i like the home of carplay..i don't use the sim card ...yes i bought from coika by aliexpress. for me you need disable original bluetooth of car..and use only headunit..one question..but the our unit is mtcd?

I don't know who is the main manufacturer. Coika says they are the own manufacturers. But don't belieb them. Struggling with the service people since days... Apps are closing after you switch to car system... bluetooth is only working with mobile phone...no obd device etc... SIM card is not working...but they keep me waiting

Similar unit here (Mercedes version):
Version: ZLH_BZ_OS_1.80
MCU: ZLH_BZL221030A_8581_13
Android version 12 (fake - it's 10 - see below)
More info in attached photos.
The 8888 code gets you into factory settings, as in this thread: https://forum.xda-developers.com/t/...-not-fyt-based-read-first-post-first.4525675/
I installed the "Fake Device Test" app and it closes after 1 or 2 seconds (possible sabotage by the device?) but I managed to get the OS info by quickly flicking down the screen while videoing it, then playing back in slow motion. This confirmed the Android API level as 29 (ie Android 10). It also seems to confirm the claimed 8GB RAM and 1920x720 screen are correct.
I want to have a poke around with ADB and busybox, but so far haven't been able connect. The unit claims to be rooted.
Wireless Android Auto works, but one minor annoyance is that my phone seems to give up on Android Auto before the unit is ready to connect. A quick toggle of bluetooth and reconnect to the unit once it's ready is necessary. Also, you need to use a cable for AA when the ZLink app on the device is set to HD - wireless AA on HD delivers a pillarboxed display.
And despite all the images on AliExpress showing 5 icons per page in the launcher, I've only got 3 per page. Is this launcher configurable?
I don't know why exactly, but I have a nagging suspicion that the screen might be a lower resolution than reported, I need to see what the kernel/sysfs says. Do these units have a dmesg somewhere? Or could there be a problem caused by the screen being reported as only 7 inches, as I saw in the output of one of the System Info apps I tried? (Screen is actually 10.25 inches.
One thing I really want to do is get a full backup in case of future problems. Is using TWRP possible on these devices? There is a 1.5 GB "update.zip" on the internal storage, I need get a copy and examine it.
Investigations continue, I'll report back. In the meantime, does anyone have any thoughts on the above?

Tom1386 said:
I have also an UIS8581 Unit von Coika. I have software version ZLH_AD_OS_1.86, and MCU LZH_qxha20830A_Q3H0_8581...
I have also some problems... the bluetooth does only work as a headset. you cant switch it on and use it as a normal conection for apps.
Once you switch to original system and then back, all apps are closed( spoitify etc) you need to restart them...
also my sim does not work at all, cause there is no APN setting in the system. once i try to enter it it says user is not able to change settings...
all in all the system is nor really well programmed and has lot of bugs.
If there is anyone who can help with get all the normal functions back pls contact me?
Best regards
Thomas
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I have gooting a new 9" android unit for AUDI. With same seller and issue.
Thinking of making a thread

simonb123 said:
BMW_OS_8581_1920_720_1.86.zip
drive.google.com
This worked for me as an update, but I have a BMW. Hope this helps!
Just unzip the HUTUpdate to a blank USB
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Click to collapse
I have AUDI ill compare because folder structurer is similar