yashsingh1/xdaforums huggingface dataset:
[Android Head-Units] kaween:
Unlikely.

The mcu is resoponsible for soundmixing (amongst other stuff) which is where that Rohm chip is used for.

The chances of having another issue just at the same time as you flashed the mcu are very remote, but you won't know for sure till you try it of course.

The most likely issue is that the flashed mcu file doesn't allow the Rohm to steer the sound streams as they should.

To be honest, I've no solution for this : this is exactly why I warn against flashing mcu when there's no obvious reason.

On top of that : Most people do not have a motorized version of this unit and the chances of finding such an mcu on the AN21-repository are slim.

What you can do :

1) try and source another user with this type of unit, maybe he has some kind of solution/copy of the correct mcu. Copying back your original mcu isn't possible : a flashed mcu can't be read out back to a storage device by the user. And when you did that first step of the mcu upgrade (the "update mcu" part), you've already overwritten the existing mcu file in the ECT location, the only correct copy at that time only resided as correct mcu firmware in the mcu itself. The mcu file location can only be accessed on a rooted unit, so the "donor" would have to have a rooted device too.

2) ask seller.

3) send back device as defective.

I was not joking when I said messing with an MCU can end in disaster, and sadly this is true for all types of Android units on the market.

I'll be searching for a 0901 myself, but so far I haven't found anything useful.
[Android Head-Units] TheSSJ:
Not needed anymore, but many thanks for the help [MENTION=223660]Miwer[/MENTION] and [MENTION=4736782]kaween[/MENTION] , I have attached the MCU working for my TD730 in my previous post.

Yes, needless to say, sometimes if someone doesn't want to hear, he has to feel the pain...Also coming from the IT world I am a little embarassed to have touched a running system (which was going really well...well, it does go well again :) ).

It's a pity that all these findings about MCU versions are just spread across 656 pages...
[Android Head-Units] kaween:
Congrats ! :)

There's no reason _not_ to experiment with a working system. Just make sure you have a backup. :) (.... also a golden rule from the IT guys)
[Android Head-Units] disc golfing:
Yea boot time was long when it first came out. I had version 2.6.40 on mine. When I put root on it I did switch to an updated one, i just haven't touched it since because I haven't had any problems with it,,,,,,just do not like the Radio Screen.

Apoligize for not getting back to ya before now........ I've been sick and just got out of the Hospital today............BUT.......I'm all GOOD now !
[Android Head-Units] dollydoll:
i'll try thank you
[Android Head-Units] Mancubus99:
Hey guys,

I bought my unit over a year ago and I've been running an older version of the firmware and MCU for quite some time. I'd like to upgrade to resolve some issues that I'm having with the reverse camera. My versions are:

System version: 2.6.70

MCU: 4.0.6-1-10-2101

I'd like to upgrade both the firmware and MCU to something newer but specifically I'd like to upgrade the MCU. In order to follow the advice that I've read here, I'd like to have a backup of my existing MCU before upgrading however I can't find it anywhere. I do see that version 4.2.5-1-10-2101 is the closest to compatible with my head unit. Should I be OK to upgrade my MCU to this version?

Thanks.
[Android Head-Units] TheSSJ:
Hi,

from what I can say:

You can flash any Android Firmware (check if it fits your screen resolution, there are 800x480 and 1024x600 I think). I was on 2.7.62 and flashed it to 2.8.8 back then without any problems.

For the MCU part you are a lucky guy if you found a suitable one. You should check though to be extra sure:

Go to settings -> About

There you see the MCU version. Tap it three times in a row and it shows you how it is configured at the moment. If it shows VW, RDS, Color, TE662X and Rohm37xxx then you're good to go in my opinion.

If you have rooted your unit, you can make a copy of your MCU config residing in /system/etc/mcu...dunno if it is zipped?

Regards
[Android Head-Units] Shadow128:
Hi there,

yesterday I've installed the Eway EW842P in my car (Seat Leon 1P, manufactured 2007), and it is working well.

But after installing I've some further questions to that device

- FW 2.8.8 is installed with MCU Version 4.3.5-13-10-2501 (in general settings I choosed "VW(4.3.10, CONFIG, RDS, Color, Rohm37XXX, TEF662X" as model). What car functions should I normally see on my Radio display? I see only a message, if a door is opened. But I think I saw in this thread, that also the ac control should be displayed?! Can I fix this with a MCU Update? Or can't I use this with a Seat?

- Can I patch the Bluetooth for myself for alphabetical order? I use a modded apk from this thread with a different design, but I did'nt find it with the alphabetical order

- Can I disable, that the sound mute's and the display is switching to video signal if I go to reverse gear?

- Is there another app for playing normal CD's? It is working ok, but a different design would be great :D

Thanks for your help,

Shadow128
[Android Head-Units] kaween:
1) No idea. Functions like door/AC/... are Canbus related. Don't have canbus, can't answer. Maybe another user using a car from the VAG-stable can chime in.

2) BT alphabetic contacts : see answer #1332

3) I gather you don't have a rear-view cam then ? Disable sound mute is found in sound settings "mute sound while reverse", but this would stil result in a black screen while the unit tries to show a reverse video. In General -> Extra settings (code 123456), -> reverse line SHOULD enable you to ignore reverse gear and subsequent automatic video switching.

4) Nope. That app simply jumps to the DVD's own firmware and is more or less independant of the Android's audio services. So other than (re)skinning that app ... no deal. Personal note : _are there really still people out there using CD's ? ;)
[Android Head-Units] Shadow128:
1) OK, maybe anyone else can help here?!

2) That ready-apk I found several times, but I used the modded apk from http://xdaforums.com/showpost.php?p=56831559&postcount=5813 which I like from the style. Maybe there's an option to patch this apk also with alphabetical order?

3) Of course, I don't have an rear view cam. Maybe in future I'll install it, but good hint with the mute sound. That should be a first step :)

4) I didn't know that there's in external firmware which controls the DVD drive. But that explains everything :) And of course there are people who are still using CD's ;)
[Android Head-Units] katalinscrob:
Hi guys, just bought 1din pure android 7inch Mstar768 cedric 3 unit, without canbus, from autopumpkin.com. Problem is that it has 4.1.1 jb version with known networklocation.apk, only gps seen, installed gapps via copy in system/apps 644 etc.

Do you think I can load a newer version at least 4.2? I cant find any recovery mode sequence, unit rooted via baiduroot already.

Thank you, hoping to get the most from our units.
[Android Head-Units] TheSSJ:
Sure, why not? Place the unpacked upgrade files into /sdcard and go to settings -> general -> System upgrade

No need for recovery. If you are rooted you can trigger the boot to the recovery partition though (if you really want to), by installing a terminal emulator and then typing:

su
reboot recovery

Don't know what can be done there, but not much as I suppose :)
[Android Head-Units] kaween:
Keep in mind : there's no real 4.2 for the 786 platform.

Sure, you can find "4.2" labelled system software, but these are all fake, relabelled 4.1's in reality.

The 2.8.8 for example is supposed to be a 4.2, but if you try running software on it that depends on a real 4.2 core, it will fail. That was the reason why PowerAmp toast would not run on the AN21's without the creator recompiling it for 4.1 platforms.
[Android Head-Units] katalinscrob:
Ok so I can unpgrade to 4.4 without messing with mcu? Unit is 1024x600, and in mcu version after 3times tap nothing appears. Please recommend an android zip to install, and mcu if possible. Thank you.
[Android Head-Units] shatteredautumn:
I have the model pictured below. During a reboot it didn't turn back on. I tried the power button and every combination I could think of and it doesn't respond. The hole for the reset button doesn't actually have a button in it. I'm hoping the seller will replace it, but while I wait is there anything I can try?
[Android Head-Units] TheSSJ:
You'd need to tell us what MCU version you have exactly, e.g. 4.0.6-1-10-4501, etc.

Maybe then we will find an MCU from here, which fits...

For the firmware see this thread (over google translator would be best):

http://4pda.ru/forum/index.php?showtopic=522762

ATTENTION:

Everything you do is at your own risk.

When the unit is turned off, try to press menu button first (keep pressed) and press then the On/off button until the Headunit buttons light up, then leave the on/off button but still keep the menu button pressed. IF you are lucky you should land in recovery mode where you can make a factory reset (and maybe the unit works again).

Just a guess, though...:confused:
[Android Head-Units] shatteredautumn:
No good. I guess the thing had a hardware failure.
[Android Head-Units] aroel1:
or make sure you do not have blown fuse for audio.
[Android Head-Units] katalinscrob:
Can't find nowhere MCU version. No build.prop line, system settings about ahows date time and LMA_PT_C0L_V1.00, terminal comm nothing!

Please help to identify!
[Android Head-Units] TheSSJ:
You sure that you have an AN21 then? Can you upload a pic of you settings->about screen?
[Android Head-Units] Haligan:
OK, I just received this radio today. A lot of information here to read. I am going through the post, but a quick question to get the newer home screens in has to be rooted?
[Android Head-Units] TheSSJ:
Hi,

of course not :) You just need to download an alternative launcher app:

Apex

Go launcher

zero launcher

etc. etc.

Here at XDA you'll find also some alternative launchers and ports from other devices.

When you installed an app, just press your home button and you will be asked which home you want to go to :)

Have fun!
[Android Head-Units] ragarok:
I believe I've got one of these units but I believe it's been messed with to appear better than it is and the software versions it says it has doesn't fit any of the available firmwares found in this thread.

AliExpress store

stock out of the box it is supposed to be a 1.6Ghz dual core. well, headline says 1.6gb, description says 2ghz and photos show 1ghz.. :rolleyes:

Antutu reported dual core 1785Ghz Samsung Exynos 4412 and it scored measly 8000 points in the test. I'm no expert, but a 1.8ghz Exynos chip should give me a better score yes? To top it of, while the unit was on WiFi Antutu couldn't go online to verify the scores which in my mind is suspicious.

But here's the kicker. the about system page says this unit has MPC version 4.3.4-7-10-6501 and system version 2.7.32

And those versions is nowhere to be found in this thread. how can I make a backup of my unit?

I used the passwords on the first page (all of them works fine on my unit) and did a factory reset of the unit, in the hope of it would clear out the junk done by the store, it also wiped out gapps so I've not been able to do some tests since and the browser for some reason softbricks the unit every time I try to open it. screen goes blank, then lights go out of the buttons and I need to pull the power cord to reset it :confused:
[Android Head-Units] ryhoo2:
You can also try WP8 Launcher - Nice BIG tiles, very touch friendly, especially on a bumpy road:)
[Android Head-Units] macca017:
Outlander

Does anyone have a 2013 2014 Mitsubishi Outlander with a AN-21 U head unit?

I ask as I am looking for a MCU that will work with the Outlander's canbus.

There are not too many models to select in the MCU settings, none of them are Mitsubishi, VW seems to dominate the list?

Since buying my unit http://www.aliexpress.com/store/pro...x-2012-2013-2014-radio/227447_1941451274.html

The steering wheel controls have never worked, canbus is installed to the head-unit and I know how to set-up the SWC, regardless the SWC will not work.

I assume I am using the wrong MCU as it's not communicating with the canbus?

Can anyone with a Outlander that has the SWC working, please tell me what MCU they are using and any other tricks they may have used.

The supplier of the unit has tried to help by sending me another canbus box along with other suggestions, again, nothing worked.

:cool: Thanks in advance
[Android Head-Units] m00n13:
I have this unit on a 2011 Outlander but the SWC is resistive on my car. The trick with Outlander SWC is that you need to provide a GND connection. Take a look at this page,
[Android Head-Units] macca017:
Thanks, however, I as I have no clue on what wire to ground, I may have to take the car to an auto electrician.

Unless anyone can guide me as to what I should do? :confused:
[Android Head-Units] katalinscrob:
Here it is...
[Android Head-Units] darkromance:
hi guyz

I have a little issue in my device

Everything works correctly exept for the screen resolution

I think iy's set on 800x480 but my monitor is a 1024x600

so it looks like this:

Does anyone could help me to solve it?
[Android Head-Units] typos1:
I meant every word of it, but in a mildly humourous way.

Dont know yet, I ll try with my Android DVB-T box and let you know.

Used Paser.It and Connects2 before, but not for wiring diagrams and specs like the site you posted though, I ll try there, thanks :)

The one that I said had bad reviews in the Play store DOES apparently support that tuner, Ive seen an app using it too, in this post, but its audio only for some reason.

This page might also prove useful - there are several DVB-T devices that use that chipset and are Linux compatible :

http://linuxtv.org/wiki/index.php/DVB-T_USB_Devices

Here is the app I was talking about:

https://play.google.com/store/apps/details?id=app.goprasoft.dvb.tv&hl=en_GB

EDIT: after a brief search, this seems to be a good one to go for @ only 35quid:

http://www.ebay.co.uk/itm/PCTV-TV-T...eo_Capture_TV_Tuner_Cards&hash=item485d49683c

And its app:

https://play.google.com/store/apps/details?id=com.dexatek.pctv1.player&hl=en_GB

Was just checking as you mentioned several times about finding a DVB-T app and it wasnt that clear to me that was what you meant. :)

It might still be on the board but with no connector ? Only way to know for sure is to dismantle it.

Thanks :)
[Android Head-Units] donaldta:
I

highly

recommend you get a multimeter before trying. Even if its one of the those cheap $20 Amazon or Radio Multimeters. Remember how I warned the omarko about the 12V voltages? I mean that doubly for you since you have a much older car and you're connecting it at the steering wheel column. (And, yes most likely it would be using the Key1. Because as I said before in most cars they use analog signaling before feeding it into the ECU)
[Android Head-Units] sorin129:
I do have a multimeter, just don't know how to use it that well. lol What should I check with the multimeter for at that wire from that steering wheel column?
[Android Head-Units] donaldta:
If you don't have an auto-ranging multimeter then start it with the higher setting than the expected value. This prevents from shorting out the multimeter. For example, my Innova Multimeter has 500, 200, 20, 2, and 200m for DCV selections. Since cars will supply around 12 volts of Direct Current then I would set the dial to 20 DCV to measure voltage. If your multimeter is auto-ranging then set it to DC voltage then touch the positive probe (red) to the B31 wire and then its ground wire to ground, like metal on the chassis. Then with your car running, press and hold the one of the steering wheel buttons. If you get a value then that means your car is using voltage references for each button. You'd should be able to see a different voltage value for each button press.

If you do get readings while measuring DCV then write down the values for each button. If your values ranges from 0 to 5V then those are fairly safe voltages. Most likely the built-in SWC will be able to tolerate it. However, you might want to ask Judy what the voltage tolerance is for the SWC adapter of the AN-21. If the tolerance falls within the range of your buttons then you're good to connect the Key 1 wire to it. If it is buttons are greater then the tolerance then a voltage divider will be necessary to reduce the measurements within a safe threshold.

If you don't get any values while measuring voltage then check the resistance. While measuring Ohms, you want to make sure the car isn't running because it is possible to damage the multimeter or get false reading. Since we don't know what resistances to expect, set it to the highest level. For example, my multimeter has Ohm selections are; 20M, 200k, 20k, 2000, 200. I would start at 20M and hold the button down then check the value. If there is no value then go down to 200k, press the same button and check the value. Continue going down until you get a value. Otherwise, if you have an autoranging multimeter then set it to OHM (Ω) while the car is off and perform the same tests by holding down the buttons.
[Android Head-Units] omarko:
Guys, my unit is still not remember the live wallpaper I select. Each time it restarts, it goes back to the winter background. Is there a way to force the live wallpaper?

Using Nova Prime launcher.

thank you.
[Android Head-Units] typos1:
Cant you put the Nova Launcher apk into your system folder and delete or disable the std launcher ? Assuming youre rooted.
[Android Head-Units] sorin129:
Thanks a lot for this. I will try it and see what i get. About the resistance, what do i do if i don't get voltage but do get resistace? I still connect the Key 1 wire?
[Android Head-Units] omarko:
hi, thanks for the tip. Not rooted unfortunately and I am completely new to this. I saw the rooting process in the first post. Is this something I should do ? I am not planing to do anything crazy with the unit, just want basic apps like music, video, radio, satnav, ipod and phone to work well and be easily accessible (as in some nice large icons) and then also have nice visuals like live wallpaper.

Thats kinda it, I would have thought that the system can do this stock without any rooting.

Oh and Merry Christmas to everyone! This unit was my present. :) Thank you Santa !
[Android Head-Units] donaldta:
My bad, sorry. I forget that this is not common knowledge. But, yeah... if it is a resistance to ground then there is no worries, because there are no voltages in the line that could short the SWC adapter. In this case, the SWC adapter would be the only thing supplying voltage (a small amount at that) to measure resistance of the button presses, similar to how your multimeter would be measuring it. So, you could safely connect the Key 1 wire to it without worrying about shorting the AN-21U SWC adapter.

The main cause of concern is when there is voltage on the line and the SWC has to measure voltage references.
[Android Head-Units] sorin129:
Ok got it thanks. Now I feel i understand it and I will try it after christmas. I will let you know how it went. Thanks again for all the info that you got me. This should work, just connecting the Key 1 wire from the radio if the voltage is not that high in the wire from the steering column.
[Android Head-Units] djblaze852002:
http://www.youtube.com/watch?v=BXK8epsEYWU

Here is my video review of the unit. I went over some of the weird tricks I have found to getting the unit working well. Sorry if it is long and boring.

Also, here are my simplified rooting instructions (this can all be done on the unit without the use of a computer, just visit this post in a web browser on your head unit):

Download and install Android Terminal Emulator on your Head Unit (via play store)

Download and install Root My AN-21 U

Open the AUX application and close it.

Run Root My AN-21 U and press the "Step 1" button.

Reboot the unit.

Once the unit has booted the screen will likely be black, press the Home button to display the homescreen.

Run Root My AN-21 U and press the "Step 2" button.

Reboot

Once the unit has booted the screen will likely be black, press the Home button to display the homescreen.

Open Android Terminal Emulator.

Type in "su" (no quotes) and hit enter

You should be prompted for SuperUser access. You can check off Always Allow and grant access

Type in the next command "rm /data/local.prop" (no quotes)

Reboot

Congratulations you are rooted!
[Android Head-Units] sorin129:
This is the multimeter that I have.
[Android Head-Units] donaldta:
The DC voltage is the upper-left hand breakout and Ω the section below it is the ohms/resistance.
[Android Head-Units] typos1:
Pumpkin_cool is listing this facia with the 7 LED colours that KID52 mentioned in an earlier post, so there may be some way of changing them on yours.

On all of the Android devices I ve ever had, the kernel version is given in system, but these dont seem to mention it, is that correct ? Am I right in thinking that the MCU is the motherboard control (ie the car stereo board that some apps radio, music etc are controlled by) and "system" is the firmware version ? (DVD speaks for itself, obviously)
[Android Head-Units] sciallo:
That would be cool... I don't see an option for colors on this version...

Correct kernel version is not in that screen. And yes on the rest...
[Android Head-Units] omarko:
I have this one :

http://www.aliexpress.com/item/Capa...ore-2-Din-Car-PC-head-Deck-DVD/929502900.html

with resistive screen model no TH8681GA and it has an app which allows me to choose any color for the buttons.
[Android Head-Units] typos1:
Great video, very informative, thanks !

BTW, I know someone has asked before, but I cant remember seeing an answer - what does the "Colour" app do ?

I see, maybe worth extracting the APK and seeing if it works on other models, probably wont, but there may be a chance they all have the ability built in and some idiot at the factory removed it - maybe the same person responsible for the unit's other quirks ? !
[Android Head-Units] sciallo:
Looks exacly like mine, model number too. Mine is capacitive, is it an app or part of the settings menu to choose color? Also, are you able to assign any function to the right knob push?
[Android Head-Units] omarko:
havent tried to assign anything to the right knob yet.

And yes, its an actual little app that comes up and shows the full palette of colors you can choose from.