General HowTo: Root Joying SC9853i Head Unit

[Rami3073]

Hey I did a quick search of the thread about any
queries regarding Joying’s new Android 10 head units using a new chipset UIS7862, rather than SC9853i, having root but seems to be no clarity on that. So just asking if root is possible or perhaps in the making for the new products?

 

[kersian]

Just to check, does signing works for other branded fyt units?

Sent from my SM-N975F using Tapatalk

 

[dragon-tmd]

sorry to quote you again, almost every app i check comes back as android 10, geekbench and antutu

Check yourself: https://play.google.com/store/apps/details?id=mark.fakedevicetest&hl=de

 

[riz619]

Hey there I'm wondering if you can help me. I'm trying to root my joying head unit.. I placed both the files you listed onto a USB, the head unit picked it up and a message popped up saying its about to update. However, all that happened was the screen went black for 2 seconds then the head unit rebooted back up. Once it rebooted, the update message popped up again and the same thing happened. The device kept rebooting until I removed the USB. The head unit is working fine but there is no root access. Am I doing something wrong? any help will be appreciated. Thank you.

 

[surfer63]

Check yourself: https://play.google.com/store/apps/details?id=mark.fakedevicetest&hl=de

Don't troll. The units are real Android 10 units. The firmware has been checked.
This is the new unit, not a SC9853i unit.
Download the firmware yourself and check it yourself (if you even know how to do that).

 

[deedeebulldog]

No command

I am having issues with rooting. I am on the latest firmware from April. The process looks normal until i get a message that says "No command". Then it just reboots. I am using the image from post #351. Really the only reason I am trying to get root is because after the last update my screen dimmer no longer works. It is at 100% no matter how low I put it. I am having to use a screen filter at night and I would like to auto launch it at certain times. Maybe I will try re flashing the stock image and it will fix itself.

Never mind. I searched No command and found the answer. It did not fix my screen brightness though.

 

[marcus82]

hi guys, we're 3 friends with Prelingcar tesla style head unit with this cpu. We've installed latest android 10 firmware and now 2 of these head unit are withtou reverse camera; moreover, we're without parking sensors and I think it's related to che mcu version. We've carchoose.apk to download it but before first update from this apk, parking sensors were working!! Then, anyone has mcu file for FORD FOCUS MK3?

 

[GrubcioPL]

MCU Problem with update, no sound

Hello!

I am having trouble updating my MCU. I've been randomly losing this driver for a while now. After starting the car, the radio has a problem with starting (android works fine, no sound from the radio) when the MCU starts, the version is unknown. After 5 minutes, the device resets, sometimes the MCU will load and everything works until the car is turned off again.
During the update (SD Card FAT32, empty only with the original files from the joying blog - Trying few others), the information that SDCARD cannot be mounted

It goes to the line where the STM32UD was updated correctly, then the line with the description: "2019.09.07 10:40:57 JY_53_C63L_H32P48F64_Ver: 1.0" - the device is locked here, nothing happens - after 5 minutes, restart the device and loop.

How the device works properly MCU Version is:
2019.09.07 10:40:57 JY_53_C63L_H32P48F64_Ver: 1.0

CPU Info:
Intel X86_Octa-Coire 1.8Ghz [email protected] + 32 GB

Android 8.1


What should I do, what file should I use? Radio is:
Joying JY-UO135N4G

//EDIT:
I don't speak perfect English, I use a translator. For thorough help, sending any files, I am able to use a grant. I am asking for help in solving the problem.

I am asking for information which data is still needed to solve the problem. The device is rotated.

After struggling to start the device, I did not have an MCU, I used Joying Extra Tool and the option -Rebot Option - Soft Reboot (Gui only, sufficient for all apk replacements)

After starting the car, the panel LEDs light up for 2 seconds and then they turn off, the device usually starts after a few minutes, the vehicle's logo is displayed with a countdown from 5 to 0, the device stops on the number 0. I have to hold power off and manually reset the device, then Andorid is charging correctly.

Twice after using it, the device started working properly. The MCU showed up in the settings.


System info:
Kernel: #451 SMP PREEMPT FRI MAR 29 2019
Platform: (24)6313 LF Full band carplay
touch: 911_1060(263efcda)E:0

APP 1024x600 2019-11-28 15:50:42
System 2019-11-28 09:40:06 Thursday

 

[energy_drink]

I just updated my 8inch 4/64gb headunit to latest (I suppose) firmware ( 2020-04-09).
Is it possible to root this firmware yet? Is any of files from 1st post working with this update?
If not, any other way to root?

Thanks for any help.

 

[lucvan]

Hi, I am looking to root my headunit, but the firmware version is dated 2020-06-22 so I do not have a dump of it to modify using the method here. Can I just use the old bootloader and root?

[edit] - the unit is a JY-VO130N4GSN

 

[wenefe1]

Hello you experts
I have a Joying 10.25 universal unit Intel 1240 x 480 unfortunately flashed the wrong MCU and now I only have about 30-40% background lighting can help me? I read that you can adjust the brightness in the build.pro
for that you need root right I don't have that and I can't find Boot.img for
9853i OS 1280X480 Old UI 2019.11.28 mcu 32
Pleace Help me
Thanks Werner

 

[surfer63]

Hello you experts
I have a Joying 10.25 universal unit Intel 1240 x 480 unfortunately flashed the wrong MCU and now I only have about 30-40% background lighting can help me? I read that you can adjust the brightness in the build.pro
for that you need root right I don't have that and I can't find Boot.img for
9853i OS 1280X480 Old UI 2019.11.28 mcu 32
Pleace Help me
Thanks Werner

Why don't you download the correct MCU firmware and flash that one?

 

[JMeister234]

Why don't you download the correct MCU firmware and flash that one?

I have a Atoto S8 ultra. I wanted root. I compared the patchedboot.img and it was comparable to Atotos boot.img for the same chip, resolution and GPU.

I downloaded the 1024x600 and it didn't brick my head unit.

But the radio stopped working, and the red letters "Need check active. ID 1.Area 2"
- what is that error referring to?

I can revert back to the Atoto firmware, but I'd really like root.

 

[surfer63]

The rooting process as described in the first post using Magisk is really a general purpose rooting method. The latest Magisk makes it even more easy. Search for magisk on XDA.
The boot image is for a great deal the same (apart from architecture: ARM, Mips or intel) for all Android systems but can contain few changes that can completely brick your system or make certain hardware/software based options (in your case) not function. Especially those Chinese Android head units contain a lot of hardware normally not available in phones or tablets. Some of that config/drivers/software is included in the firmware (/vendor for example), some in the MCU firmware and some in the boot image.

Please create your own boot image for your system: You can use any "howto" that comes a bit close to your unit. Using Magisk "parts" you can even do that manually: pda has a post about that, but I currently can't find it (I didn't bookmark it as I don't need it ).

 

[khoaitaychienvn]

I'm looking for the file to root the version 2020.4.7, can anyone help please?

 

[homer.ali]

Hi there!

Apologies if this has already been asked and answered but Joying recently uploaded updated firmware files in April 2021. Included in these files is firmware for the 13.3 inch 1920x1080 resolution headunits!

Instead of 6521_1 it is 6315_zip

Does anyone happen to know if the instructions listed in developer.zip could still apply to this firmware? Would love to actually be able to root my head unit as ADB is not natively available via usb ports or wifi, making any kind of modifications or application development a pain.

Thanks!

 

[surfer63]

Instead of 6521_1 it is 6315_zip

Don't use it!
6315 is for the uis7862 units, not for the sc9853i units.

 

[surfer63]

I'm looking for the file to root the version 2020.4.7, can anyone help please?

You can find it on my repository: https://github.com/hvdwolf/SC98531BinRepo/tree/master/boot_images/2020-04-07
Don't use it if you have a 800x480 or 1280x480 unit or a 1600x800 unit.
It will work with 1024x600 and 1280x720

 

[khoaitaychienvn]

You can find it on my repository: https://github.com/hvdwolf/SC98531BinRepo/tree/master/boot_images/2020-04-07
Don't use it if you have a 800x480 or 1280x480 unit or a 1600x800 unit.
It will work with 1024x600 and 1280x720

Thank you a lotttt

 

[homer.ali]

Don't use it!
6315 is for the uis7862 units, not for the sc9853i units.

Thanks;

Unfortunately I think I was just too late or too early with the purchase of this particular unit. When I bought this one, joying wasn't selling it on their site: instead i had to email sales directly to purchase it. It's a 13.3 inch 1920x1080 sc9853i unit. Works great but I guess joying decided to tweak it further before selling it to the public so the closest version available for sale from them is a 6 core version of this unit. Very similar but not exactly the same.
The 6315.zip i mentioned above found on joying's website is NOT compatible with my unit as you have mentioned.

All that said, I managed to talk joying into sending me the original firmware for MY unit which does include 6521.zip.
Just to be safe, I even installed it on my unit (without any mods) and it installed and booted up just fine.

So at this point I tried following the instructions in developer.zip in this post and made a patched boot.img
When installing this however It unfortunately results in a soft boot loop.
I can exit the boot loop by placing the unmodified update back onto the usb.

Any ideas what could be going wrong?
I think it's worth noting i followed the instructions in the readme pretty closely but had trouble getting magisk on my unit to agree to patch the boot img as in the instructions so instead i used another device to output a patched boot img using the same input file (the boot img from the file joying sent me)
That shouldn't cause any problems though should it?

If it helps the error I got in magisk on the headunit was "Cannot unzip zip, installation failed"


Edit: it looks like that was the problem.
Magisk kept insisting on updating on my unit to 23 version no matter what update channel i picked or if i disabled updates. Once magisk updates it is unable to unzip the boot image on my unit. A google search showed that a few other users have had the same issue with later magisk versions with no posted solutions that I could find.
What I did was I just created my own magisk update server using flask and python but where I told it that the latest magisk version was 20.4. this version was perfectly capable of patching my boot image and I was able to successfully flash this onto my unit. Woohoo!
Butttttt... I also am experiencing the google voice no feedback bug. Boooo!
I can revert the google voice bug by just uninstalling magisk but its really disappointing that there doesn't seem to be a solution for this yet. (unless I'm quite mistaken).
If this is a known issue, would it be possible to update the OP to provide this as a disclaimer? Just a suggestion.