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Full AOSP on MStar Cedric3 head unit

Hi!
I bought it on eBay one head unit with the following originals characteristics:
CPU: Cortex A9 Dual-Core 1Ghz
GPU: Mali 400
RAM: 1GB DDR3
Android Version: 4.4 (but really is 4.2)
MCU original Version: 4.3.11-1-03-615101-150112
System Version: 2.9.5_20150413
Anyway, I tried to update the MCU with the head unit who brought extra settings -> model choose, but the upgrade to 4.3.13 everything works fine except the lights that indicate the volume level, and that is not moved up or down the volume.
I suppose that changing the MCU has stopped working. How could recover the original MCU?
I contacted the seller, but no longer sold items on eBay and I doubt I answer.
Thanks in advance!!

Hi ,
There is a setting that could rectify your problem. You had the setting open on your 2nd picture (model choose).
You probably have to try several models to see if one will work for you. Each time you choose one the unit will set the parameters then reboot ... do not interupt this.
After it reboots try your various controls to see what has changed.
My unit is the 2 knob version AN21-U. When i installed the RED MOD firmware my volume knobs were non functional. After trying several models from the "Model choose" screen in the extra settings menu it corrected my problem.
Hope this helps.

Quincydog said:
Hi ,
There is a setting that could rectify your problem. You had the setting open on your 2nd picture (model choose).
You probably have to try several models to see if one will work for you. Each time you choose one the unit will set the parameters then reboot ... do not interupt this.
After it reboots try your various controls to see what has changed.
My unit is the 2 knob version AN21-U. When i installed the RED MOD firmware my volume knobs were non functional. After trying several models from the "Model choose" screen in the extra settings menu it corrected my problem.
Hope this helps.
Click to expand...
Click to collapse
Hi.
I have not been lucky.
The seller gave me the original MCU, but when I try to put it through a USB not done properly.
If I add to the list that is in the internal memory, it does not appear to select .

Hello all, I'm looking for the updated MCU files and android updates if possible.
Does anyone have a link to the files please please!
Thanks

Hi All,
Does anyone know the code to get into the developer options for this android head unit?
Full AOSP on MStar Cedric3 head unit​
Thanks in advance!!

Need Help Rooting - Capacitive SC GPS Navi Android 4.4 2 Din 7" Car DVD Player Stereo

Need help rooting - Capacitive SC GPS Navi Android 4.4 2 Din 7" Car DVD Player Stereo
Specs:
CPU: Cortex A9 Dual Core
Android Version: 4.4.4
MCU Version: 4,3,13-1-13-610101-150413
System Version: 2.9.5_20150413
DVD Version: 2.13.11-hd860mc
This is the HU: http://www.ebay.com/itm/161676876555?_trksid=p2055119.m1438.l2649&ssPageName=STRK:MEBIDX:IT
I have never rooted an android device and rooting something as fragile as a HU makes me nervous but I am needing to do so because I need to make my USB storage as internal storage. I am desperately trying not to brick this unit. I have read several threads regarding this but everyone seems to take different approaches and they have different car stereos than I. Not to mention I cant find a single user running Android Version 4.4.4. My unit was updated.
Will this method in this thread work? http://forum.xda-developers.com/showpost.php?p=61120805&postcount=7068
Other Thread's I've viewed:
http://forum.xda-developers.com/and...-unbranded-6-2-2-din-4-4-2-car-tried-t3173762
http://forum.xda-developers.com/showthread.php?t=2528349

Can anyone help?

Tell us more info from the settings about screen,

nixfu said:
Tell us more info from the settings about screen,
Click to expand...
Click to collapse
This was the only information posted in the About Menu in settings:
Specs:
CPU: Cortex A9 Dual Core
Android Version: 4.4.4
MCU Version: 4.3.13-1-13-610101-150413
System Version: 2.9.5_20150413
DVD Version: 2.13.11-hd860mc
Is there anything specifically you are looking for?

Any ideas? I attempted to download Baidhu Root vs 2.4.6 and its asking for a password to unzip it.

You have an AN-21U.
You don't have 4.4.4 no matter what the settings screen says. You have android 4.1
Research the root methods from the AN-21U thread. Or better yet, just install RedMod (avail in that thread). Pre-rooted.

Just curious is Redmod an entire OS? Also I flashed it with 4.4.4 .. it didn't come that way. You sure it's still 4.1?

Rooted it with Redmod and everything seems to work fine.

Headunit Mstar full AOSP cedric3

Hello respectfull people☺
I've got a headunit unbranded and written on the screen that it's android 4.4 but if I tap on the label android version I discovered that it's android 4.2
Anyway that's not a problem because it works good
My question now is how can I upgrade it to android 4.4 kitkat?
Other question is if I can't upgrade it so can I make a format to the software and install a 4.4 android to replace the 4.2????
Thanks for you all if you helped me in that issue.

Tamer amer said:
Hello respectfull people
I've got a headunit unbranded and written on the screen that it's android 4.4 but if I tap on the label android version I discovered that it's android 4.2
Anyway that's not a problem because it works good
My question now is how can I upgrade it to android 4.4 kitkat?
Other question is if I can't upgrade it so can I make a format to the software and install a 4.4 android to replace the 4.2????
Thanks for you all if you helped me in that issue.
Click to expand...
Click to collapse
No one can help unit youve shown us something that can identify your unit, post a pic of your settings/about screen that shows your MCU type.
What we can say is that if its got an Mstar processor its deffo NOT an MTCB/C head unit, it may be an AN21-U unit, theres a thread for them in the General forum.

I
typos1 said:
No one can help unit youve shown us something that can identify your unit, post a pic of your settings/about screen that shows your MCU type.
Wh
at we can say is that if its got an Mstar processor its deffo NOT an MTCB/C head unit, it may be an AN21-U unit, theres a thread for them in the General forum.
Click to expand...
Click to collapse
informations about the headunit is full AOSP cedric3 on Mstar.. and I will be thankfully if you give me a link to catch any answers from it
I don't know why pictures of the headunit I can't uploaded here

You will have to look for a thread with "AN21-U" in the title in the Android Head Unit General forum (its a very long thread started at least 3 years ago with millions of views) - in order to post a link I would have to look, so you may as well look yourself.

Ok thanks [emoji1] [emoji1]
Sent from my SM-N9005 using XDA-Developers Legacy app

Alidesheng Head Unit - Mediatek MT6580M

Posting this to see if anyone has these head units and about any possibility of development on them.
If anyone can interpret anything useful out of the information below, that would also be helpful.
I found a thread on 4pda discussing this, but thought I would post here to see if XDA is able to assist as well.
CPU Model - MediaTek MT6580M
Kernel Architecture - 4x ARM Cortex - A7
Manufacturer - LeTV
API - 27
Android - 8
System Version - OS_v2.0.5WF_GWI_DNYB
Kernel - Linux 3.18.79
MCU - CM_19.07.09_19.54
RAM - 2Gb
Internal memory - 16/32/64 Gb
I have attached some photos of the information presented on the head unit and also from CPU-Z and AIDA64.
HTML:
https://i.imgur.com/WI5wBbG.jpg
HTML:
https://i.imgur.com/TiM3VRH.jpg
HTML:
https://i.imgur.com/l0mUUMU.jpg

I have the same unit. Figure how to root and make USB modem work? Thanks

Also of note is that this head unit is sold as running Android 9, but when checked via Android settings/CPU-Z/AIDA64, it indicates that it is actually running Android 8.1. The first image on the first post shows the inaccurate information screen they have put on the unit that falsely states the unit is running Android 9.0.

Anyone with a ROM for this? Firmware???? Any kind of update?????

Hellzoner said:
Anyone with a ROM for this? Firmware???? Any kind of update?????
Click to expand...
Click to collapse
I found the following posted elsewhere. I believe they said this is a copy of the firmware they received after requesting it from the seller of the head unit.
I have not tested this personally, so I don't know if it will flash successfully or not. Proceed at your own risk.
https://drive.google.com/file/d/14HwNtpOUg5xBmzaWeDUCREtQcak_NUML/view

What kind of firmware is this?

Can i install a diferente ROM? If yes.... Witch...tênis gents

Anyone?!!! Please help

what happens if you connect the canbus and the acc wire?https://ae01.alicdn.com/kf/HTB1cBgkUYPpK1RjSZFFq6y5PpXaZ.jpg

I really dont't know... I have connected It with the canbus box and nothing hapened....lol
---------- Post added at 06:57 PM ---------- Previous post was at 06:51 PM ----------
BUT since i have the rádio connected... My speed Control doesn't function.... A press the Button and nothing.... And also in the car screen i did a test and It came whith the following error Dtc 01
C07488 and a message whith engine fault....
Anyone

any news??

Any help????

aldo234 said:
I found a thread on 4pda discussing this
Click to expand...
Click to collapse
There is now a modded firmware available there. I have not tested it personally.

Can add a link.... please

Hellzoner said:
Can add a link.... please
Click to expand...
Click to collapse
Please search for it based on the information given.
I would post the link but I am not certain of the rules on this forum regarding linking to external sites.

How do i install It? Sorry i'm a Noob

Help please!

Anyone find a way to root this device yet?

Just thought I would bump this for those interested:
Wanted to update that in the thread on 4pda, users have made a lot of progress with this unit.
- Multiple versions of firmware available, including some modified ones. E.g. There is a modified firmware on there which fixes a bug where the unit would not save a new selection of default firmware.
- Some have figured out where to solder a usb connection in order to use adb and fastboot. This also allows for one to rescue an otherwise "bricked" head unit from a botched firmware install, etc.
- I think they have also explored various issues beyond this.
So thus far, it seems the thread on 4pda has been the primary source for development/user discussion for this head unit. Nonetheless, I thought I would update. Input from users of this head unit would be welcome, e.g. if anyone has tried the new firmware, etc.

it seems the 4pda site is all in Russian I think? any chance someone can post the links to the firmware downloads here? if allowed of course.

Updating firmware

Hi have installed an android head supposedly at android 9.1. I'd like to update the firmware as many things are not working on this unit, i.e., wireless, phone linking, canbus, etc.
This unit has no name brand on it. System settings shows
MCU: 3.5 (82277L),
CPU: A7 1.3 GHz x 4,
android os: Android 9.1
Model: YT9216BJ
Does anyone have any idea on how to get the correct firmware update for this unit. Thanks, any help would be appreciated.
kd

did you even try searching the forum for "YT9216BJ"?

gottahavit said:
did you even try searching the forum for "YT9216BJ"?
Click to expand...
Click to collapse
Why of course, and of the hundreds of postings I found, not one pointed me at a proper or appropriate firmware update file. But thanks for your response, it was very helpful.

XYAUTO
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