Database Users

Help with update/recover

Hey everyone,
i have a issue with my head unit.
I bought it with android 7.1 and updated to 8.1 now.
it had some issues. Phone link wasnt working, didnt take sound from phone to head unit from bluetooth.
Calls working.
I want to update or recover firmware now, but when i plug usb stick with the file (px6) doesnt work, does not do anything.
Before, i get pop up message for update but now i cant do anything.
What am i doing wrong? How can i update or reset?
(my android unit)
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no one?

help please?

Android 10 Head Unit (unknown brand) - two issues

Hi there, I’ve got an android head unit. Not sure of the model (9006? The installer mentioned?) but I’ve enclosed some photos of the info.
Two issues:
1. external Microphone installed but quality very poor, muffled - using iPhone 8+ with Apple Car Play. Any ideas why this might be?
2. any custom ROMS or firmware upgrade for this, I don’t want to lose Apple Car Play. Wondering if this might help with (1)? Any guide would also be fantastic.
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Any help appreciated!

FYT

Andriod unit for VW/Skoda 8227L_demo firmware upgrade

Hello, I was searching this forum and found multiple firmware options. But I'm not sure what to choose. I don't want kill the unit. Is it possible to upgrade to Android 10 or higher? Also this radio has multiple places to change equalizer or bass, middle tones and tweeters, but with no reaction. OEM radio in car works perfectly. It is 2x bass + 2x tweeters. Nothing more, no DSP etc. Also itś strange to me that in one setting it says Android 9.1 and in other 8.1Go...
Can you help me with firmware, how to load it and maybe findout where could be the problem with sound?
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Android Radio QT7 from Aliexpress issues / BMW E87

Hello friends I hope you can help me
I ordered an android radio called qt7 from aliexpress. the question i have is, is there a site where you can download updates? ota doesn't seem to work.
I also can't find any setting where I can change the boot logo to bmw. Unfortunately, my steering wheel controls don't seem to work either.
the 3rd problem is the gps reception.
It doesn't matter where the antenna is, it seems like I'm not receiving a signal, is there a fix for this?
The 4th problem is that the sound quality via wireless carplay is often laggy and listening to music is not pleasant. If I connect my iphone with a cable, I have no problem.
Best regards
Link to radio: https://de.aliexpress.com/item/1005003291982690.html?gatewayAdapt=glo2deu
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Please answer my Android Head Unit questions?

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Hello. I have been having problems with this YT9216BJ Android Head Unit. Linaro GCC? The Google Play store disappeared. GPS and navigation doesn't seem to want to work (it kinda did other day before Google Store disappearance). It says car navigation not installed and I am having problems with Android Automate Car Dashboard.
I'm not sure if a factory reset is the answer or if I upload new firmware? Where do I get the firmware?
If so how do you upload firmware on these stereos? Do you have to pull the stereo out? Is there a USB port etc?
Thank you.