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Erisin device that doesn't exist ??

Hi all,
a couple of weeks ago i bought me a 8inch android headunit, fitted for vw/skoda/seat.
The sellers advert says its an Erisin DU8015, now when i'm looking on erisin's website, that model isn't listed at all ??
it is an MTCD LM unit, RK3188, 1gb ram... the usual. factory settings password is 3368
I want to know for sure, before updating to malaysk's rom which seems to be a lot better than the original software that it came with... before i install it and find out there might be issues, i would want to make sure i can go back to the original software if needed.
Does anyone have an idea ?
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top left:
volume
standby
home
back
sd-media slot
top right:
tune
gps
phone pickup
phone hangup
sd-gps slot
-when i google / youtube the erisin du8015 it seems to be a wince version, but it's actually an android 5.1.1 looking quite similar too joying etc. (a load of look-a-likes found when you search 8inch vw, but all with different hardware key layouts)

Joying Head Units Bluetooth workaround?

Sorry to bother you guys but figured I have tried two of the resident experts on this type of stuff with no luck, and I apologize that I am not very knowledgeable on this stuff. I totally redid my 84 Monte Carlo SS both outside and now finishing up the inside of it. While doing so I came up with the idea of having a dedicated head unit run a backup camera, air ride controls, and other accessory type of stuff. While having a second unit run the stereo and front facing DVR, I thought I was all set because it had Bluetooth and I avoided the issue of having my phone run bluetooth stereo on one while the other would be able to bluetooth for the air ride.
What I currently have is these two units, JY-UOS02N4PX5S and UK-JY-UOS01P4V. The UK-JY-UOS01P4V is the unit I was hoping to run the Ridetech air ride app on to control the air ride. But I can change how I have the two setup if it would make a difference, but think they are pretty much the same specs except that the UK-JY-UOS01P4V has fast boot which is part of the reason for choosing to run it on the accessory stuff. Thanks for your time and sorry for creating another thread but have searched through and not found anything related to my specific units. Here is a pic of the basic setup of them to mimic modern cars to a point.
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YT9213AJ Head Unit - ROM software, Radio app

Hello guys,
I bought a cheap $70 head unit, with Android 10 and 2GB RAM on board.
Of course, in fact it's a 1GB RAM and Android 8.1 API 27, although some apps are saying it's Android 9.
In general radio is running bit slow when google maps is on, translation has a lot of mistakes, and radio app is not good as could be (For example, the button of saved radio station should display the name from RDS PS (programme service name), like "Capital FM", not frequency)
I just wondering if there is a better soft for this unit, also if someone fixed the radio app flaws (I saw custom radio apps on this forum, but some of them may not work on this particulary unit).
My device is in a VAG (VW) body shape, but I don't think if there is any difference compare to standard YT9213AJ 2 DIN radio.
Many thanks in advance for the help with this one
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Unknown Head Unit

Good evening everyone I have recently buyed a used car (Alfa Romeo MiTo) and I found a PX6 car radio already mounted on it.
I would have some questions to ask you (I am attaching the specifications in the photo):
- On the car stereo is installed the hal9k 5.0.0 version based on android 10, I was reading on the internet that the stock 11 version was released, now my problem is that i don't know exactly who the manufacturer of the stereo is, even if only to be able to reinstall the stock and get an idea.
- I delighted in updating the MCU bringing it to the latest version available on the net looking for MCTE_LY ..... But I saw that there are also other types of "MCTD" for example or "MCTE_XX" with two other final letters; I wanted to try to understand how the nomenclature works? Are they incremental letters? Is one worth the other? Is there a better ones or a worse?
Thanks to those who answer, I think that in the meantime, understanding that '' beast '' is could help me ....
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Nunoo Bmw E90 Android-Headunit - Change Firmware

Hello Together
I bought the following Android headunit for my BMW E90 from Nunoo Factory Store (Aliexpress):
Android 12, 8GB Ram 64GB with Snapdragon processor.
I have massive problems with the firmware:
-Interruptions ZLink
-very bad language translation
-DSP equalizer is missing although it is included with this device (The seller does not want to solve the problem)
-only very few setting options
- idrive controller can not be adjusted
Is there a possibility to use a firmware from another manufacturer? If yes, which one is recommended? Do I have disadvantages thereby? How can I do this?
I could not find anything in the forum about my MCU and version any posts.
Attached is a screenshot of my firmware and MCU:
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Can someone help me here?
Thanks a lot

Would also like to know if anyone has rooted these device or changed the firmware.
I have a similar one but for an Audi, but i'm assuming the software/hardware is very similar.
My one is
Version: A_OS_3.00
MCU: Z35_AXL230527A_CA3_6125_NN
6125 DDR 8GB, Emmc 128 GB, 1920x720
Base Band: EM.BP10.006:EM