yashsingh1/xdaforums huggingface dataset:
[Android Head-Units] m00n61:
If you go through this thread you will see that MCU update is NOT recommended. That being said, all system updates include the newest MCU files. You only need to be rooted and use a root-aware file manager like Total Commander in order to be able to see the folder with the MCU update files.
[Android Head-Units] guano30:
Well....

as you an see iam on an old MCU Version.

Why i am?

Because the latest Versions didnt have my MCU included.

I dont want to stay on this Version because it dont support the Knobs Change and also not the Feature, that the Radio can be in Standby for example 30 Minutes.

So if somebody is that kind and can look in the MCU Folder if my MCU is supported i am very thankful.

I gave up some Month ago flashing every new Version.

Till then it only brings Problems and never my needed MCU
[Android Head-Units] chris.r.r:
I edited some Smali Code. I changed the click event handler of the "EQ" button in the bottom bar to toggle the visibility of the list element.

Everything else was done in the layout files.
[Android Head-Units] wanxu:
Hmm ok, I'll check if I am able to do it.

[MENTION=834020]m00n61[/MENTION] , what's the difference between RedMOD 1 or 3 buttons?
[Android Head-Units] m00n61:
[MENTION=4674232]wanxu[/MENTION] - Actually, I have no idea. My unit is the standard one button 800x480 and I am using that RedMod firmware version. Since the AN21U comes in many faceplate flavors there must be one with 3 buttons that is popular in Russia so the developers decided to compile a dedicated firmware build.
[Android Head-Units] dipcore:
That's simply how many buttons in the status bar - 1 or 3

Here is a screenshot (sorry cannot post links yet) cs4-1.4pda.to/6248995/%F1%F2%E0%F2%F3%F1_02.png
[Android Head-Units] Sinner75:
Hi Folks,

would be great to receive some help. I´m on 2.8.7 and I´d like to update. But can´t find newer versions. Any idea where to find them?

I´d also like to make a backup of my whole system to get back exactly to where I start from. Is this possible and how?

Hope to get some help of the experts here. ;)

Cheers

Sinner
[Android Head-Units] Sinner75:
Hi Kaween,

wie geht´s? ;)

I´d like to ask you and everybody else if there might be a Problem with the mcu. I found my stock version data

System Version 2.7.60

MCU 4.6.6.1-7-10-6501

DVD 2.13.12.2-860mc

and know I´m on

System Version 2.8.7

MCU 4.2.13-15-10-6501

DVD 2.13.12.2-860mc

I have seen that the mcu version is lower than the one I had installed first. Could this be a reason for the not working dvd unit? Any idea which mcu would be good to work with the 2.8.7 or 2.8.8 Firmware?

Regards

Sinner
[Android Head-Units] kaween:
Wie Oft Soll Ich es Noch Sagen : Wen alles Arbeitet, Finger Weg Vom MCU. :)

You didn't only flash an older mcu version, it's even meant for another hardware revision. (your original hardware version was "7", you're now running a "15".

So yeah, since the DVD unit is not under control of Android and is a stricktly "hardware thing", and that hardware is controlled by your MCU, it's plausible your DVD issues are connected to the mcu version.

I'm on hollydays now, only have limited internet capabilities, but you'll need to find at least a firmware of the same hardware revision and at least as new as your original was. So you've got some searching ahead.

Am I sure this will fix the DVD ? No. But I AM sure you're currently running MCU code for a wrong hardware revision and this would explain a lot.

To be honest, I've never had my unit behaving oddly just because I flashed a new firmware. As ALL system versions are basically just renamed and relabeled 4,.1's with little more than a couple of bug-fixes, compatibility-fixes and some added/changed apk's added, that shouldn't come as a big surprise.

It's not like the android build ever changes between these versions, again giving little to no reason for ever changing the MCU the machine with in the first place -providing it worked correctly with the delivered mcu, of course-.

On other devices (like the RK3xxx's) where a new system flash really changes a lot, inclusive a new android kernel, NOT flashing the correct mcu that comes with a new build isn't always as forgiving (though always solvable once you flash the correct new mcu, that is).

I hope you can find your old mcu fast.

---------- Post added at 06:59 PM ---------- Previous post was at 06:47 PM ----------

1) The double sound on handsfree : I could be horribly wrong, but I've read somewhere (... I think it was on the RK forum) this issue is connected to the phone's BT hardware. I think I read about a couple of devices (phones that is) that are really picky with this, and sometimes a firmware upgrade would fix it. To exclude the phone as problem source, loan, steal, beg, ... another type of phone for test purposes and see if it makes a difference. If that doesn't solve the issue, try using an external mic and if need be, disconnect the internal one.

2) I understand you like Navigon, but to exclude issues, try Igo as test : that navi software should never give any real issues in terms of stability (it has never crashed on me, not once) nor sound issues (UNLESS you're driving with "SDVC-speed dependant volume control, which causes the first second or so of the voice guidance to play at a much lower volume level sometimes). If Igo works correctly, you can concentrate on the Navigon package itself (? other versions maybe ?).

Personally, I stick to either Tomtom or Igo on my navi's. I like Igo's free trafic control add-on, but I like Tomtom's minimalistic layout and faster response time better.
[Android Head-Units] smubob:
My unit crashed and nothing was working . after i reconnected the unit everything is fine BUT one setting doesnt work anymore -> Radio Antenne Power. I turn this setting to OPEN but if i look into it again its CLOSE. Radio quality is Bad.. :(

Whats going on ?

Gesendet von meinem SM-G850F mit Tapatalk
[Android Head-Units] shock132:
New Version?

Hi guys!

I purchased this head unit from an eBay seller named e_dreamworld and after some research it seems to me that this head unit has the same internals as the AN-21 U head unit. It says it's manufactured by Tonghai in the manual but I haven't seen anything on this style of head unit. It has a 7" touch screen and capacitive face buttons. It has all of the same ports and has a fan in the back if that makes a difference. The only problem is, I cannot seem to root this head unit using the instructions provided here in this thread. I'd like to change the DPI and modify a few other things to make this easier to use in the car.

Here is the specs from the head unit:

CPU: Cortex A9 Dual-Core 1Ghz

GPU: Mali 400

RAM: 1GB DDR3

Android Version: 4.4.4 (but it's actually 4.2)

MCU Version: 4.3.11-1-03-615101-150112

System Version: 2.9.5_20150413

Can anyone give me any info on this? I would attach pictures but I cannot use outside links until I get 10 posts. :(
[Android Head-Units] kaween:
It sounds more as if the antenna power circuit has failed.

Disconnect the Antenna Power line connection to your antenna and measure the radio's Antenna Power output line using a multimeter.

If it never switches to 12V, the circuit has probably failed.

If so, check for a possible shortcircuit between the Antenna Power line and the GND.

If no shortcircuit is measured, you have 2 easy fixes to get radio reception back :

1) connect the car's Antenna Power input to the ACC line of your car, circumventing the radio. That way, the antenna will only be powered when ACC is active and there will be no risk of powerdraining the battery.

2) use the Amp Control of the radio to act as Antenna Power : it basically has the same function and behavior as the Antenna Power line coming from your radio.

But first be sure there's no issue with the Antenna Power cabling and there's no short circuit. AFAIK, there's no electrical protection on either lines, and a cabling problem causing a short circuit or ground loop will destroy the said control line(s) of the AN21-U nearly instantly.

Luckely, any normal ACC line will allow a comparable function, with the exception of an AMP conrol line which -if you'd youse ACC for that- would power up your external AMP even if the radio is not running.

Viel Glück !
[Android Head-Units] smubob:
Thanks for your Reply...

Currently i think its the Adapter for Phantom power but i will check your recommendation.
[Android Head-Units] Taymtaym:
Expanding the 1GB partition for Apps

Dear All,

Does any one have found a way to "expand" the small 1GB partition for the Apps? Before you answer, let me tell you where I am at:

- I know App2SD and similar apps exist. So far, none of them worked on my unit. They crash all the times.

- I am not referring to the user partition (6GB or something) that can be easily remapped to an external SD via a dedicated menu item. That, I know and it does work. I am referring to the actual 1 GB App partition called /data

Now, here's my idea.

I am - and I'd guess most of you are - using an external microSD (mine is 32GB) as the user partition. As a consequence, the internal 6GB user partition sits there, mostly ignored by the system.

Wouldn't it be nice if THAT could become the /data partition somehow?

Now, that partition name is mmcblk0p9, and it is formatted in FAT as user partitions normally are. If I could

1. Format ext3

2. Mount it as /data upon boot,

That would be it, right?

Also, I know that an app (mount2SD) created a boot script in /etc/init.d: 10mounts2sd-runner. In hat script, I saw a reference to a script called mount2sd.sh located in /system/etc .

If I could modify that to mount mmcblk0p9 as /data, that should work, correct?

What do you guys think?

Any different recommendation/suggestion to achieve my goal of having a larger /data ?
[Android Head-Units] djblaze852002:
NPR One App

Has anyone here used the NPR One app? When I try to listen to the radio stream the sound comes out in super "slow motion". Very strange. Wondering if I am the only one.
[Android Head-Units] lssong99:
Actually I am also thinking about this. My idea is to create a SYMLINK (ln) and link the /data to /extsd. However, there is a long delay for system to mount the sd (well after the launcher show up). This will be a big problem for mount the whole /data to /extsd.

The other way around is to SYNLINK (ln) the data of each app (which is not boot critical) to /extsd, however, you need to ln one by one and in my system, it only save around 200M. Not worth the while....

We need to find a way to have the system mount /extsd during boot time to let space hogger like /dalvik-cache + /data/app + /data/data to be able to move for all those trouble (and possibility of bootloop) to pay off...
[Android Head-Units] Taymtaym:
Ok, so, is this long time only related to an actual external microSD card, or would it also apply to the internal 6GB partition originally used as user space? I'd guess mounting that is faster, provided we know where the actual mount command is, upon boot. Am I making sense?

Also, another more radical idea, if I open the unit, physically, what does its internal storage look like? Is it soldered on the pcb, or is it some removable media? Does anyone know?
[Android Head-Units] lssong99:
I believe the internal 6GB is mounted early in boot. However, you could already use regular "move to SD" functions in stock Settings/App to move selected app (which has no widget) to there.

As move the whole /data over there.... I need to check tomorrow~
[Android Head-Units] Taymtaym:
I use an external 32GB microSD as user space, where few Apps are moved. Most apps won't allow that, however. So, the 1GB fills up easily. Also, thet 6GB internal storage dedicated to user space is unused, as I use the external microSD to that purpose. That's why I was thinking to use those 6GB as /data instead. User space would still be available in quantities in the external microSD.
[Android Head-Units] kaween:
The memory is soldered directly on the CPU daughterboard (NOT the mcu board). Not user removable, SMD soldering.
[Android Head-Units] Sinner75:
Hi Kaween,

thanks for your reply. I hope you´ve got a nice holiday. So there is no need to answer that quick. Just enjoy your free time. ;)

I have received the mcu version 4.3.1.2-7-10-6501 from the place where I bought the unit. Is this a version I can use because it is not the same like it was before when I made the screenshot. But for the reason to have bought the unit used there is no proof for beeing the original one. But at least it seems to be for the right unit or am I wrong?-> I have installed the mcu but the dvd is still dead. So I decided to accept that it will not work. ;)

The point with navigation is that I really like navigon. I´m using sygic right now and apart from some crashes it works quite fine. But I think I will give TomTom and IGo a try. Would be great to have a navigation system with live traffic.

The doublesound of my handsfree is still there. Even after having cut the internal micro and also with several phones. But I have to check out if it is only a problem when the car is runnig or also when the engine is off.

I´d really like to know how to create a complete image of my unit. So I can get back to the situation I have right now without the need to install or configure all the apps. Is this possible? And if yes is there anywhere a howto?
[Android Head-Units] gapman56:
usb cable to obd2 working

Can you tell me where to buy this cable?
[Android Head-Units] ezknight:
My son bought what he believed to be an AN-21 U and tried to update it with the 2.8.6 firmware from the Tonghai Create wiki and it went wrong. I told him I would see what I can do. When I turn on the stereo, an Android logo comes up and I can hear a hiss that I believe is the radio tuned to dead air, as I've determined from reading various posts here is independent of the Android OS. I contacted the seller and got the factory firmware and MCU files, which are for the hardware. He didn't try to update those. I'm presuming I can restore the stereo with the factory files, providing I can get into a recovery mode. This unit has no physical buttons, instead they're capacitive controls. Holding any combination of them with the reset has done nothing. I've unplugged the connector, removed the fuse and disconnected the battery to see if it will reset as someone suggested in another thread. In short, I have no idea how to initiate a recovery mode and I'm hoping someone has an answer for me.

This is the stereo: amazon.com/gp/product/B00WJM94CC

This is their firmware: cardvdpc.com/img/amazon/P/Android4.2OS.rar

These have the same names as those provided on the wiki, except the factory set has one more.
[Android Head-Units] savaj4:
I need help with my mcu

I need help with the MCU.

I have proven many and I find the one that corresponds to my device, I need someone to help me find her.

The person who sold me by Aliexpress I always answer with this version of Android and not the MCU and is not helpful (not recommended as a marketer is bad).

My device is for Volkswagen 8 "

VW CONFIG, RDS, BC6, 2DIN, TDA7719, TEF662X

PLEASE HELP ME !!!!
[Android Head-Units] perryano:
Internal/external SD/USB wont mount Android head unit

Hi guys, this is my first post so not sure if in the right place.

I bought a chinese android head unit with Android 4.4.4.Has 8gb internal flash, 2 sd slots, and 2 usb slots. It is

When the unit powers up most times it will have an error and not mount any of the memories (internal or sd or usb)

When you open file explorer it just shows that the internal sd card is unmounted. I have to restart the device 3 or 4 times before it works normal.

Tried contacting the seller in China and no help from them. I have installed all appropriate firmwares/mcu's applicable for my device (which is a JY manufacturer) several times and still the same issue.

It is getting very frustrating now and I can't seem to do anything to fix it.

Anyone know of anything please?

Much appreciated
[Android Head-Units] Tantrome:
hi would like to ask if my unit is an an21 u?

CPU : MST786 A9 Dual core processor

OS : 4.2.2 Special for cars

Screen: 8inch 1024x600

RAM: 1GB

ROM: 8GB

Amplify IC: STMicroelectronics TDA7850

Radio Tuner: Philipps NXP8602(6686)/TDA7706

other details

MCU version : 2015-04-16 15:45:42 MT_30_C0L_5002_CAN(RiCan)

DVD Version: 2014-02-10 08:54:22 R-12X-945N-NC-NP-IPOD

CAN Version: H700E1DK02-140402

thank you
[Android Head-Units] wanxu:
I updated the code of the ipod app. It's just a change of skins using the ones from [MENTION=5492644]chris.r.r[/MENTION] . I'll try to change the smali code but here without the art for the songs it's a little bit of nonsense.

Apk if anyone wants to try (just put it in system/apps overwriting original apk, maybe you want a backup in case this doesn't work or you don't like it): https://mega.nz/#!oUBAUZaS!AWAMwFZZ1yfCbldgSs2uYg2k1qgP7AuwQSey7oiYK6w
[Android Head-Units] gapman56:
Front Camera in Aux

I have the exact same problem, have you been able to figure out how to use your front camera as android's camera?
[Android Head-Units] tsman:
Powered antenna causing static after 2-3 minutes

[MENTION=6311672]rgrfish[/MENTION] : you're using a KGL/Huifei device too... Also, if your car has an antenna with an amplifier (.... if your car antenna requires power, you've got one of those for sure), the issue might be a failing signal amp in the antenna, or a failing power line to that amp. Easiest way to check for this : disconnect the antenna plug and provide a different "antenna" (a piece of rougly 3 feet of electrical copper wire will do for this test) and use it as antenna : tune in into a stronger radio station, and see what happens. If the failure is gone, your antenna and/or antenna amp is the most likely culprit. If the issue is still there, the problem must be found inside your unit.

I have a KLD/Heifei unit with the same problem. When I tested and unplug my antenna and replace with a wire the radio worked for 2+ hours with no issue. I really don't want to remove the OEM antenna from my wifes brand new Hyundai Elantra GT. ;)

Is there any way to modify a config file or install a spacer or something between the HU and antenna? Or any other thoughts?

Thanks in advance :)
[Android Head-Units] ktibor69:
I have received the USB receiver. It's work fine but found only one FM station and the receiver didn't find DAB+ stations.

I know now, I use the secondary diversity aerial, with that I got weak signal.

Which type aerial do you use?

Car manufacturer FM aerial with splitter or separate DAB aerial?

I found this aerial on Aliexpress:

http://www.aliexpress.com/item/TV-a...a-with-Amplifier-special-SMA-F/868246493.html
[Android Head-Units] Ady81:
Hi there!

I'm a new user and I have an fast question. I just bought an anroid car stereo like in the object, but not the same:

w w w.aliexpress.com/item/Android-4-4-car-audio-dvd-gps-with-Capacitive-touch-screen-for-Fiat-Linea-punto-3G/32376074125.html

Can I root this car audio with the procedure in the first page? Or it only for AN-21U car audio?

Many thanks in advance.
[Android Head-Units] Pazens:
http://xdaforums.com/showthread.php?p=60521407#post60521407
[Android Head-Units] Tantrome:
Hi All, I want to upgrade my headunit to the standard firmware of AN-21 U, but the problem is since the headunit manufacturer develop its own version of firmware i can't seem to update it using the firmware provided in this thread, one issue is the headunit can only be update using the system.img boot.img format while the firmware here is for update only.

Please help me the supplier of this headunit is not responding anymore
[Android Head-Units] pedrazamarcos:
DVR or Record feature

I have this version and seems to be a AN-21U variation,what i am trying to do is use the "Record" or "DVR" feature but i have tried different cameras,i tried the rca reverse camera with (12V power) on the rca connector but no video,I also tried the "usb special port dvr camera" but no luck.And what I don't understand the most is what the small white wire labeled "DVR IR" is for?I seen some people asking about this DVR feature but nobody has confirm if this feature works.Can someone please help
[Android Head-Units] Macje:
Hello my friends, very entertaining this issue, I appreciate all your help.

My question is this, I bought this radio dvd and is spectacular, but when trying to update it started to fail me all ...

-actualice to version 2.6.7 and bluetooth does not work (does not save and do not recognize any device though scanning)

-dvd it is working, but now does not work after a few days.

-the car radio, it works, but bears no memory or configuration, if the radio is turned off resets everything.

-But the most important i can not install another version, that the sd card it no more found, it appears that can be removed safely if I draw physically, but does not exist in the OS when the insert, no matter what I do .. .

-recognizes USB, but do not let me update from them.

Please any help?

-CPU: cortex-A9 dual core

-RAM: DDR3 GB

-ANDROID: 4.1.1

-MCU: 4.2.5-7-10-2501

-System: 2.6.70

-DVD: 2.13.12.2-860mc

-----------------------------------------------------------

hola mis amigos, muy entretenido este tema, les agradezco toda su ayuda.

-mi pregunta es la siguiente, me compre esta radio dvd y es espectacular, pero al tratar de actualizarla me empezó a fallar todo...

-actualice a la version 2.6.7 y el bluetoot no funciona (no guarda las configuraciones y no reconoce ningún dispositivo aunque lo escanee)

-el dvd funcionaba pero ahora tampoco funciona después de unos días.

-la radio del auto, funciona, pero no guarda ninguna memoria o configuración, si se apaga la radio se resetea todo.

-pero lo mas importante, no logro instalar otra version por que la tarjeta sd ya no la reconoce, aparece que la puede desmontar de forma segura si la extraigo físicamente, pero no existe en el SO cuando la inserto, no importa que haga...

-reconoce los usb, pero no me deja actualizar desde ellos.

por favor alguna ayuda?

Please forgive my poor English
[Android Head-Units] perieanuo:
Hello,

I need the pinout for the 3g dongle,on my unit I have a 4pin connector for this.the italian seller 'forgot' to send me the cable,so for start I need the pinout in order to make the cable.no need to tell you this cable is impossible to find.

I don't want to lose the remaining guarantee opening the unit....

If anyone can share something please do.I can post some pictures with radio back side if it help.the radio is a Fiat bravo 2 variant,by the way I'm very satisfied with him.

Somebody tried automate?

Best regards,ovidiu

Update :

I mesured the resistance on the 4 pins of 3g connector,found Gnd and maybe the 5V but the other 2 pins,nothing meaning infinite resistance to gnd or 5V.I think inside they didn't put anything.

One of the other 2 usb ports may be used for the 3g dongle maybe?anyone tried this?I did't really get the idea of a dedicated usb port for the 3g dongle...
[Android Head-Units] wanxu:
This is an english forum, but I will answer you in spanish: intenta instalar otra versión de firmware a partir del USB. Dices que no te reconoce la SD, pero el USB tampoco? Sino, que no te vayan esas cosas debe ser por la MCU. Entra en Settings/Extra Settings y busca la opción "Car model" creo que es, selecciona el que corresponda con tu coche y la radio se reiniciará.
[Android Head-Units] roystervi:
New update

I guys am back checking out the forum.. I have been checking posts all the way back to see what new software are out there for our unit. I did not see anything in my searches and hope someone might link me to a file folder or to some link with pic of what the new software looks like. I have seen some nice mods of the radio I like to install. I have 2.8.8 install, was there anything new after this and is it stable with no UI warning?

P.S I look 1st before I ask. I know someone might want to waste there txt and say "dd I look 1st?" when they can easily post a link.

Thanks in advance ;)