yashsingh1/xdaforums huggingface dataset:
[Android Head-Units] blacktomcat:
Hi guys,

I recieved this HU for christmas and i would change the FMradio.apk in order to have the RDS info.

For what i read, It seems that i have necessary to root the device.

From the specifics (in the image) i see that my HU has android 9 and the most recent FW (28/11/2019).

- It Is possibile to use the pre-rooted FW in the First post without any risk?

- in this case, Is It like a downgrade from android 9 to android 8?

-It would be possible to Just root the FW that Is mounted on the HU?

Thank you in advance!
[Android Head-Units] fani:
make a full backup before trying anything else. Its just numbers (android 8 or 9) it is basically just the android 4 at the back.
[Android Head-Units] Blefish:
Unfortunately all these firmware are based on Android 6.0 and it is manually modified to show Android 8.1 or even Android 9.1.

Could you upload the dump somewhere if you have done backup? I would like to take a look into this firmware, perhaps try it on my HU as well.
[Android Head-Units] blacktomcat:
Oh, so it's a "fake" android 9/8/7 or anything else. Good ti know.

Yes, i'll do a full backup and i'll post it somewhere.

In the meanwhile, i have a question, Just ti be sure. In order to install the pre-rooted firmware (May/2019), can i load the file (from the first post) on an USB drive and then from the HU lunch the upgrade? Or Is it mandatory the use of spflashtool (connecting the HU to the laptop with the male-male cable)?
[Android Head-Units] andy_s2018:
I managed to use the mouse to move ..... but I do not combine to correctly set the touch scren

how do I ... kindly
[Android Head-Units] daviliyo22:
Each time I turn on the radio, the usb appears disassembled. To recognize it I have to unplug and plug it. I try with fat32 / ntfs pen drive. Any solution?
[Android Head-Units] Blefish:
I read that 20191208 is based on 20190912 release. Same deal, someone modified it and renamed the date :/. I believe it is rooted. As far as I know, for YT9216 it is needed to flash through SP flash tool but I am not 100% sure. Someone said you can flash a different lk.bin and then you can update via pendrive. My HU is installed into the car so I don't have time to experiment with it as much as I wanted lol.
[Android Head-Units] Ipse_Tase:
I would go in the Factory Settings, Engineering Test screen (pwd 26959910) and see if the power option is set to "user".

https://xdaforums.com/showpost.php?p=80007572&postcount=346

That should put the unit to sleep after 30-60 sec assuming you have a fairly recent (>June 2019) software.
[Android Head-Units] fani:
it shouldn't.
[Android Head-Units] Kgonla:
Hello guys, I have this device:

In the "8888" menu there is the "upgrade and unload", inside a menu in chinese with these options:

Is there someone who know the meaning of this? Is maybe useful for upgrading or maybe rooting?

Thank you.
[Android Head-Units] elroyel1327:
Just used an auto translator, nfi how accurate it is.
[Android Head-Units] blacktomcat:
Hi guys, I finally installed my HU and everything seems to work...except the fact that the headunit won't shut down! The connections should be ok (I tried to invert the yellow and the red wires and anything changes) but also if I shut down the car, the HU Is still turned on! If I long press the on/off soft touch button the only things that happen is that appear the time&date on the screen. But it stays there! It won't turn off!
[Android Head-Units] Matchless 2015:
What happens when you remove the key from the ignition?
[Android Head-Units] Blefish:
If you have CANBUS working (shows open doors etc), it should turn off when you remove the key. This might be different though but this is how it works on my VW. Also one wire had to be disconnected (I think it was ACC but not very sure, it was describe in the manual). I can't recommend CANBUS setup enough, it integrates much better and auto turns on reverse camera etc. Much less wiring to worry about as well.

Without CANBUS, you need to make sure ACC +12V is lost when you turn off ignition and make sure the wire is connected. That way the radio only works when ignition is on/engine is on though.
[Android Head-Units] blacktomcat:
Nothing happen. The HU Is still on.

In attached the photo of the connections car side and HU side.

I think that there is some modified connection in the car side because:

- the old car stereo had the same connection and has always worked in the same way (I was able to listen the radio also whit the ignition off).

- there is some additional electrical tape just few centimetres before the iso connector

- when my original car stereo was stolen, my auto electrician settled the wiring in order to listen the aftermarket radio also whit the ignition off. Now I'm thinking that this operation has been done car side instead of headunit side.

I will check it in the afternoon and I'll update you
[Android Head-Units] fani:
Red wire is not connected to ignition. You can test this by disconnecting the red line only and see if unit turns off or goes to sleep.

you can splice the red wire to cigarette plug also.
[Android Head-Units] koontzy65:
Any tips making the canbus working ? I think I need to add an adapter (dodge ram 1500) but I don't know where to look or which model

Thanks alot !
[Android Head-Units] blacktomcat:
Yes, It was like I thought. There were a modification on the car side connection (red wire was connected to the yellow one) now I restored the original condition and everything works as it should.

Now I have new and enthusiastic questions for you, guys :D:D:D

- the volume level 1 is too high, I was following the instructions posted in this thread, using the mtk engineering mode from the PlayStore. I found the correct setting, but I cannot understand what I have to set as parameters. Do you know the parameters to set in order to reduce the minimum volume level? Or other ways to reach the aim?

- I started to follow this thread because I was searching a way to include the RDS function. I read that the first guy that discoverd this possibility, found the RDS information in the notify bar. Now that my HU(with stock firmware) is mounted in the car I noticed that in the notify bar I have only "FM radio" without any other RDS information. So, the question is: also if I decide to install the rooted firmware with RDS radio, will it work? (I think that [MENTION=4223446]Blefish[/MENTION] has the same HU yt9216, maybe he could remeber this detail)

Thank you guys
[Android Head-Units] joop1987:
You can change the max volume in Factory settings, amp.
[Android Head-Units] fani:
There you go mate. :cowboy:
[Android Head-Units] sheshman:
did i mention before that i love you? :) Thanks mate
[Android Head-Units] blacktomcat:
Changing the power percentage of the amplifier seems that has any effect.

Today I installed aida64 to better understand which rooted firmware I have to install and surprise...I don't have a yt9216 but it's a yt9218.

So, the file in the first page is suitable for my HU?

can I do the installation through flash drive (removing the preloader from the folder)?
[Android Head-Units] elroyel1327:
Hey everyone , I bought one of these units recently and was able to get the vendor to send me the current firmware file: https://www.aliexpress.com/item/33012966830.html?spm=a2g0s.9042311.0.0.2b9a4c4dpRWGVB

If they'll be of any use I'm happy to share them.
[Android Head-Units] Opperpanter:
Has anyone managed to get some decent sound/audio quality? By default it is very poor. Without HiFi the sound is flat, no bass. With HiFi there is too much bass, no medium/high tones.

I know it's not a pioneer, but I was at least expecting it to be similar or slightly better compared to my stock/oem radio in my Ford Fiesta 2014. But this is like 2 steps back.

I tried fiddling with built-in equalizer and also the equalizer of the mp3 music players that I use, but it's just not going anywhere.

Android: YT9217C_00005_V003_20190225_HIFI

system: Android 8.1 Go kenel 3.18.22

CAN Pro: Raise-Focus-V4.1-disconnect

FLASH: 16G

cpu: A7 1.3GHz x 4

Capacitance: 10000 UF

Amplifier: AC7315 MOS bile duct 45W X 4

display: 1024*600

MCU1: HW8227L-3.3-SWO-1.9
[Android Head-Units] fani:
I have non-HiFi version and the sound output is pretty decent. with split high/low speakers at front, basics at back plus subwoofer in the trunk.

The built-in equalizer works fine, with separate adjusters for bass, lows, mids, Highs, and speach.

I use Poweramp as default music player with DVC disabled under the headphones output settings.
[Android Head-Units] Opperpanter:
I guess "sound quality" is also subjective. I spoke to someone else having the same unit and he also said quality and volume was good. But mine is clearly below the factory radio.

Maximum volume is also poor, can't really blast any proper dance music. Even at volume level 30 it's not really that loud. Amplified is set to 100% in factory settings. Media sound is set to maximum.

From what I can see, all these chinese radios use same/similar amplified chips so I wonder if getting another one will really help with the sound.
[Android Head-Units] cityhunterxyz:
Has anyone else had problems with the microphone on these units? I was having problems so I installed a sound recorder app and found that it's very quiet with a constant buzzing noise drowning out anything said, it also seems that the pinout for an external microphone was not connected on my model of head unit. I know it's common for these units to have a pretty crap internal mic but is there as software workaround for this?
[Android Head-Units] sheshman:
This head unit is pretty good but there are two negative subjects about this unit,

1-radio tuner is weak, you'll get weak reception no matter how your anteanna is works fine + radio app is drives you crazy because it's not allows you to save stations as you desired,it's saving stations as ascending order.

I believe there is no solution for that (at least i couldn't find yet), don't buy fm amplifiers or new antenna it won't fix the problem, tuner is weak and you have to deal with it.

2- built-in microphone is most cheap one that you can buy,also there is a huge gap between microphone and front cover, microphone is allready very small and that gap is making worst, also if your unit is close to heater fans like my car (2004 fabia mk1) then it makes much more worst,nothing but wind sound or static during a phone call or sound recording.

Bu there is a solution for it, 2 days ago i went to a VIP car restore store (they are restoring panel vans like mercedes sprinter or wolksvagen transporter to VIP cars), i asked them are they selling any good quality microphones for handsfree systems, they were good guys asked me what for, i explained to them and they just gave me 2 microphones as free of charge :)

If you are capable of doing repairs or upgrades then it's pretty easy,

--dismount your head unit from your car

--remove the front frame or back frame (front frame is easy to remove but you need to be very very carefull because you can damage the screen) i did remove the back frame, back frame is little bit long but don't let that scare you because when you removed you'll see back frame is long because the cooling purposes, when you take a look to mainboard (which is not so big) you'll see microphone socket

--unsolder original microphones pins

--i attached new microphone under to my inner light (ceiling light), lay new microphone's cable according to location (where you want to attach your new microphone), in my car it was beyond my capabilities to lay cable to there so i get help from my mechanic.

--after laying cable is completed, solder your new microphone's legs to old one's socket

--re-attach the front or back cover of your headn unit

--mount your unit back to your car

now my microphone is works perfectly, tried couple of calls and peoples who i caleed said they are receiving my sound 5/5.
[Android Head-Units] Jonnyapps:
Thank you for the response. I checked and it is set to 'user'.

I had upgraded the software, via usb flash drive, using one of the files in the OP. Other than that, I'd found it very difficult to find anything specifically mentioning the 'C' variant I seem to have, so was reluctant to try alternatives, especially as google translate makes the Russian links a bit confusing to decipher. I appreciate the OP links are also not 'C' versions, but I figured I'd give it a go and it installed. This problem pre-dates me flashing anything.
[Android Head-Units] Blefish:
201905 firmwares dont seem to have sleep, I recommend you to update it to a newer version. But as it's so confusing which version of the HU you actually have vs what is shown in settings, and also the confusion about what firmware really is the latest, I cannot recommend any firmwares.

Well, as long as you use USB host-host cable and only flash boot.img, system.img, you can't go that wrong and can recover if something goes wrong by restoring the dump or flashing a different one.

-EDIT-

It seems 20191030 is the latest, provided originally via OTA (zip type update). 20191129 is based on that, with added root and some applications, also better translations for Russians.
[Android Head-Units] SamirXda2019:
Hi mate

Could you send the link to dwnload the update of: 20191030 or 20191129 ?

Regards
[Android Head-Units] mortee:
Hello,

I have the XY AUTO YT9217 10.1" unit. It got into a boot cycle when I set a custom boot jpeg: after powering on, in about 20 seconds it flashes the screen for about 1 second, no image whatsoever, then it goes back to black again, and starts the whole thing over.

No matter what I do with either the reset pin or the "test points" (or vol+ contacts) on the main board, it won't ever do anything else, no recovery, not detected as a USB device when connected to a computer.

Any clues as to how I could factory reset this thing, which would presumably undo the jpeg setting which caused this in the first place?

thanks
[Android Head-Units] wooldogsinc:
[MENTION=6105230]sheshman[/MENTION] that's a pretty cool microphone mod. Did you take any photos? Would love to perform this upgrade. Was it easy to do? Did you take any photos or videos that can help us out?

---------- Post added at 10:27 AM ---------- Previous post was at 10:21 AM ----------

Does anyone know which I should connect to for reverse cam? A11 OR E3?
[Android Head-Units] fani:
Hi, my unit is 7" 16Gb/1Gb. My guess is this firmware isn't meant for your device. The memory dump has only partitioned 16 Gb out of 32 in your device. You might need the original firmware to fix this issue.
[Android Head-Units] lemmon:
Thanks for that......

Taking in to consideration that my unit is right above the A/C conduct, I think I can simply open a small hole for the air to pass through the unit..... I live in a place where weather is never below 20's C/ 70's F and the A/C is always on.
[Android Head-Units] Curington1988:
Do you know where i can find that original firmware??? My seller in china isn't a very good responder...
[Android Head-Units] fani:
Google search is your best option then, the Russian forum mentioned in 2nd post is a good source.
[Android Head-Units] Keribang3000:
Back Panel/Wiring Schematic

Hi all,

I guess this is currently the active thread on this 7" Chinese HU. I have a similar unit, YT9217 C (see attached photo for more spec) .

Everything works ok (just quite slow I guess but I'll live). My only issue right now:

My rear reverse camera is connected via AVin app, and when activated it cuts off the current audio that's playing. I search the XDA, and there's so far no solution except may be altering the wiring connection from the f-cam.

So my question / request, is there anyone that has the wiring schematic or at least back panel drawing with wiring labels on this HU?

Thanks.
[Android Head-Units] fani:
I believe there is a dedicated rear camera input line (#25). which activates via brown wire (#3) connected to reverse light power. As for audio while reversing, there is an option in "car settings" called "reverse mute off" you have to tick it, to keep audio playing while reversing (which is dangerous by the way). Also there is an option called "audio mixing level" in volume settings (or similar) which reduces music volume while navigation instruction is on, to your preference.

Device is a bit on the slow side, but as they say "you get what you pay for". :highfive:
[Android Head-Units] Keribang3000:
Excellent Sir!

This is very useful. Will give it a try. Thank you!
[Android Head-Units] spedward777:
blank screen with no usb, trying to utilize swd/swim

anyone else trying to use the swim port on the board?

I purchased a ST-LINK/v2 mini and I am trying to figure out how to program eMMC through it. I tried SWD interface but couldn't get it to recognize anything. I am gonna have to take a closer look and get it setup again when I have more time was just wondering if anyone has had success with this approach. I wired up the BATT, ILLUM+, and ACC to the positive and GND to the negative of a power supply.
[Android Head-Units] fani:
Try with un-powered device, usb link and spflashtool.
[Android Head-Units] cafsta:
[MENTION=9936717]viktorsaari[/MENTION]

Thank you for your efforts getting so much info.

I have tried updating my device and only succeeded in updating the MCU. When trying to update the Android I constantly get an error. I've used the USB option.

So now my MCU is updated but not the Android version. Attached is a pic of the error I get.

On a side note. With the Android update, it's there still no time delay shutdown option? This is making me want to sell this device. View attachment 4788716
[Android Head-Units] adammohd88:
Hi...

i have same unit but my button not working. Can someone guide to set the button?
[Android Head-Units] fani:
what is your current version of android? and which of the two update options are you using? (mentioned in post 1). I myself was able to use the 1st option successfully but got error with option 2. (probably due to wrong usb) but they both work fine for others.

you can may be try first the 17.01 update. after that the 22.05 update.

there is no such "option" for time delay shutdown. after update, its automatic, it goes into deep sleep instead of shut down. Device boots up in 3 seconds instead of 30. even after 24 hours. (requires android 22.5.2019 and mcu2.8)
[Android Head-Units] fani:
In car settings->factory settings (password 8888) there is an option to remap buttons to functions. That might help solve the issue.
[Android Head-Units] cafsta:
My current android version is 20181224.

I used both options: With the rar file unzipped and later wiht the rar file extracted.

Okay still no time delay but does this mean that my amplifier will not be switched off? The amplifier constantly on when vehicle is off will definitely affect the vehicles battery.
[Android Head-Units] fani:
I haven't noticed any adverse effect so far. even after 2 days of inactivity. I guess its not drawing much current while in sleep mode.
[Android Head-Units] jfinesse2000:
ROM Firmware for Chinese 7&quot; Head Unit with AC8227 YT9217 YT9218

I have had one of these units for a few weeks. Just getting to know it. Originally, when I connected my iPhone X to it using the original charging cable it would charge. The last few times I have connected it it seems to start charging then stop then start then stop over and over again in rapid succession. Anyone know anything about this?

Thanks.
[Android Head-Units] spedward777:
tried both ways powered and un-powered tried with spflash and other software. With un-powered the blue light near the port becomes illuminated so I know the 3.3V and GND connection is working the problem I guess is the matching the software to the chipset and determining whether to use the SWD or SWIM configuration.
[Android Head-Units] bitstra:
I will have look deeper into overlaying CallUI on top of HUR today...

I have no steering wheel switch for starting gps apps (VW golf plus).

For the lock up issue while connecting any phone to usb1:

I use USB0 with an powered 4x otg hub connected and setting USB0 usbmode from usb1.5 mode to usb2.0 mode in factory settings/USB... With this setup I don't have any issue while connecting phones...
[Android Head-Units] raphael.atienza:
Oh that doesn't solve it sadly. I use a powered USB Hub for the main USB because charging is slow with just the main USB.

With or without the hub the unit locks up with the 20190522 Rooted firmware

So for now I am on the fake 2GB 20190411 firmware... It has been the fastest and most stable for me so far
[Android Head-Units] bitstra:
With Headunit Reloaded App you can add Android Auto support to any Android Headunit or tablet...

Have a look here:

https://xdaforums.com/general/paid-software/android-4-1-headunit-reloaded-android-t3432348
[Android Head-Units] sheshman:
unfortunatelly i didn't take any photos during the process ( it came to my mind after all process completed :) ), but i'll modify another one for a friend on this weekend, this time i'll definitely take photos of every step.

Was it easy to do? absolutely !!! i'm a rookie about electronics (soldering etc.) and mostly i'm affraid of opening any electronical device, but this unit is very very easy to disassemble & assemble, removing old microphone & soldering new one takes like 5-10 minutes top,but laying cable to ceiling light is really pain in the butt (for me of course), my mechanic layed cable in 15 minutes :)

My car doesn't have wheel control buttons for radio and this head unit doesn't have support for remote controller, i did a circuit using arduino and connected to KEY1 of the head unit, now i can control head unit from my steering wheel, i can share diagram and codes if anyone needs the same thing.
[Android Head-Units] wooldogsinc:
That's great thanks [MENTION=6105230]sheshman[/MENTION] I am comfortable with laying the wire but electronics is my weakness :) thinking about buying this one.

https://a.aliexpress.com/mtPkWUjA
[Android Head-Units] sheshman:
all you need is to solder two cables don't worry :) this one seems good my microphone is the same.
[Android Head-Units] Blefish:
https://yadi.sk/d/VXvFHGJMrbnUvQ/Прошивка для FlashTool

Got mine from there.

On a side note, for me the navi button did not work if Waze was not running. I reverse engineered and modified the services.jar so it would properly start waze. I also modified the radio button to multiplexing keys, from there I was able to modify the parameter so it would always launch spotify. I am now trying to make it so it always starts the last audio playing app, be it radio or spotify or youtube for example.

Also if you have 1gb variant, you can use AirFrozen to freeze Google Play Services. This will make everything much more speedier and if you only use Waze+Spotify, everything works fine. Unfortunately Youtube does not work then (but I think you can use Youtube Vanced).
[Android Head-Units] wooldogsinc:
That's great [MENTION=4223446]Blefish[/MENTION] would love to be able to start off where I left off in spotify and the media player. If you can work this out that would be great.

Also going to do this mod so I can easily have USB and aux for audio in.

Biurlink 1.5M Car RCA Cable Adapter https://a.aliexpress.com/_nwNdp

---------- Post added at 01:50 PM ---------- Previous post was at 01:50 PM ----------

That's great [MENTION=4223446]Blefish[/MENTION] would love to be able to start off where I left off in spotify and the media player. If you can work this out that would be great.

Also going to do this mod so I can easily have USB and aux for audio in.

Biurlink 1.5M Car RCA Cable Adapter https://a.aliexpress.com/_nwNdp
[Android Head-Units] daviliyo22:
20191030 firmware is avaible to yt9218 2gb DSP Non touch????
[Android Head-Units] t3l3m4k0:
E3 is for input video signal

And A11 is de signal delivered by car to indicate that reverse gear is on

good luck
[Android Head-Units] mahsun494:
İmars YT9217B have my radio. Can I install the YT9218C firmware? If not, is there a current version? One last thing. Can you send me the latest firmware? (YT9217B)
[Android Head-Units] SimaR26:
Is there any local radio app for the 9218