yashsingh1/xdaforums huggingface dataset:
[Android Head-Units] donaldta:
Right, but you wrote, "I also have a drawing that shows the Pink wire as Pin 7 and the Brown wire as Pin 6."

I'm trying to convey to you that the drawing (that you were going to paste) could actually be the Pink wire on Pin #4 and the Brown wire on Pin #5. Because as I illustrated, depending on the viewer's orientation of the connector "pin #7" might actually be "pin #4" whereas "pin# 6" might actually be "pin #5".

[1][2][3][4][5][6][7][8][9][0] Front (Pin)

[0][9][8][7][6][5][4][3][2][1] Back (Wire)

If you look above 4 aligns with 7 and 5 aligns with 6, so the illustrator of that drawing, that you mentioned, may not have use the proper perspective when they numbered it.

I tried to look for install guides for your 2000 Ford Mondeo but all I could find is that its North American name was the Ford Contour. I cannot find any guides for that model either. Can you submit a photo of "the plan" or a link to it? The irony is that you're one post away from being able to post a clickable URL. You need 10 posts to publish links in your messages but if you surround the URL with underscores (_) then it will bypass the URL parser and let you post it. It won't be clickable, but I'll be able to copy and paste it into my browser bar.

Regarding to the measurements that you took earlier when you wrote, "If it is connected, the 'standby' voltage is 4.75, dropping down to different voltages, when pressing a button." was that while the factory radio was connected? Because that's the wrong way of identifying your SWC controls with a multimeter. The problem here is we do not know if the voltage source for the SWC signals originates from the radio or behind the dash. So, when you measured the 3.23V from Key-1 that could be the voltage pressure from AN 21-U which it uses to measure the impedance to ground.

If this is the case, I would suspect that your car either has an open loop resistance or resistance to ground circuit. What are the Ohm (Ω) measurements of pins #9, 10 and 11 without the harness connected to a head unit and while you hold down each physical SWC button?

Here are my guesstimations of the circuit based on your feedback.

Open Loop Resistance:

PIN 10 ---> SWC Buttons ---> Resistors ---> PIN 11 (or 9)

Resistance to Ground:

GND ---> SWC buttons ---> Resistors ---> PIN 10

It seems that there is an Australian retailer called, "Elite Electronics", which sells both both Axxess or PAC Audio steering wheel control adapters. But, the problem is neither manufacturer has connection guides for your particular vehicle. You probably have to contact them personally to see if their product is compatible with your car.
[Android Head-Units] ThePapabear:
The "Plan" i have is in full german. I think it would not help much. It´s only about which pin get´s which signal (Ground, SWC, light,...) of the 3 harnesses, that connect to the original radio. I too found nothing, that seem to fit to my car, only adapters for other brands like Pioneer, JVC, Kenwood, Clarion,... but they all have 3,5 Jacks to connect to the radio.

You are right, it was connected to the radio when measuring the voltage. I was measuring the resistance only to the ground, because there were none, i thougt it only could be voltage. But voltage could only be measured, while the harness was connected to the radio.

Now i was in my car again and tried to measure like you intended.

So, it seems, that it is an Open Loop Resistance between PIN 10 and Pin 11. Radio ON and the connector not on the radio it gives me the following measures (@ 20K on Ohm Ω ):

Nothing pressed = 5,08

Vol + = 0,17

Vol - = 0,08

Source = 1,66

Seek - = 0,32

Seek + = 0,58

every Pin to Ground = 1

Pin 10/11 to Pin 9 = 1

Pin 9 to Ground = 0,08 (however..)

I´m a little confused now. I thought the AN-21U is able to read the resistance? Or has there to be a special connection for an open loop and it could only measure resistance to ground?

Thanks, but i am from Austria, not Australia (we have snow and mountains, but no kangaroos except some of them in Zoos. ;) ).
[Android Head-Units] donaldta:
Don't worry to much of the 3.5mm jacks. That's just a common connector for SWC interconnect for most third-party radios. You can always get an adapter to change the connection to basic wire, if one isn't provided with your SW adapter.

Again,

never

measure resistance (Ω) on a live circuit. The best case is that you get false readings and the worse case is that you damage the multimeter. The appropriate way to get the impedance on a live circuit is to infer it by measuring voltage and amperes then use the VIR calculation to get the resistance There are even handy online javascript calculators to do this, like Sengpielaudio's Ohms Law Calculator.

Well, if all you doing is connecting Key-1 to Pin 10 then the result is still an open circuit. You'll need to ground pin 11 to provide a working circuit for the AN 21-U to measure the resistance values of each SWC button press.

Whoops, misread that. Sorry. :(
[Android Head-Units] typos1:
Most car stereos and SWCs use the next/previous track buttons as next/previous track buttons for CD/music playing and next/previous stored channels for the radio, so what youve done is correct and its what everyone does.
[Android Head-Units] donaldta:
I'm curious. Some SWC adapters have the ability to facilitate an alternate function upon a long key press vs a short press. Does the AN 21-U have this ability?
[Android Head-Units] KID52:
From what I can tell, no, my stock stereo had this ability, hold to change folder, press to change track.

With the AN-21 U, as soon as a button is pressed on the steering wheel, the function is set on the unit.
[Android Head-Units] KID52:
In my quest to get the steering wheel controls working with any apps, not just default ones, I have narrowed down the interaction to "com.tw.service_a5a4.apk".

Freezing this apk disables control input from both the screen buttons, and steering when controls, so somewhere in the code it has to be monitoring for these inputs, and acting upon them. Now I just have to try and work out where then change it...
[Android Head-Units] typos1:
Thats good news for getting apps working via SWC, well done KID52. (I found a DVB-T app by the way, posted xmas eve).

Some of the products Paser.it make (Maestro, Media DAB) have this facilty too, although I think it depends on whether the SWC are resistive or CAN Bus.
[Android Head-Units] ThePapabear:
Yes! The AN 21-U has this ability. While i was testing today, i pressed the button on the screen (volume up) for a longer time, and a popup came up. It asked for a short, long or very long press time of the button. I even got a second popup, but dont remember what this was about. I´m shure this is exactly the function you are asking for.

Thank you again for your advise! I was about to try something like this, but my fear of damage something was bigger. Tomorrow i will ground pin 11 with the thin black ground cable, that comes from the radio (there are two, a thicker one and the thin one). So voltage comes from the radio and is grounded against it, this should do the work.

Absolutely no problem!
[Android Head-Units] KID52:
Okay so, it isn't obvious to begin with, and I haven't seen any instructions for this anywhere, but it is possible, and the display makes sense now!

For example, it says "NEXT/NEXT(L)". Now, why repeat it? What this means is, one button press does the "NEXT" function, and a long "L" press also does the "NEXT" function.

If you hold your finger on the function, you get a popup that has the options of "Long", "Repeat", and "Super Long". If you press "Repeat" the text changes to "NEXT(R)" meaning any press will do the "NEXT" function.

If you change it to "Long", you get an additional popup that lets you choose another function, of which there are many, including "SCREENSHOT", why you would want a button on your wheel to take a screenshot I don't know, but hey, why not. So now it will say "NEXT/SCREENSHOT(L)", one press of the button does "NEXT", and a long press does "SCREENSHOT". This is the same for "Super Long" except you need to hold the button longer, and it says "NEXT/SCREENSHOT(S)".

You cannot have a "Long" and a "Super Long" press on a key, so each key can do two different functions, not three.

Credits to [MENTION=2678656]ThePapabear[/MENTION] for noticing this feature!

Also, it's worth mentioning that this works with the front panel buttons too.
[Android Head-Units] jakejm79:
If you have both a regular and long press function set to the same button, what happens if you press and hold the button?

1. Does it do the regular press function and then the long press function after you hold it for a certain amount of time?

or

2. Does it not to do anything when you first press the button and then if you release the button quickly it will do the short press function of if you hold it, it will do the long press function.
[Android Head-Units] NMR2D2156:
I agree it is rooted works well. My only point is there is no root management program. Nothing to restrict what applications can use root. Unless I have something corrupted in my setup. Root checker app shows root, busybox all correct, but missing supersu management has an x on it, not installed.
[Android Head-Units] dragoescu:
Agree, but I for me this is not a problem. I use the unit as a car DVD, i have no other apps installed other than youtube, one app that is syncing music from my home NAS via the internet,TuneIn, Waze and different home launcher.

I use stock music player, radio, video player.

I use root when I remove stock apps (like launcher and other apps that I don't use). So for me is ok this setup.
[Android Head-Units] flblbl:
Hello,

Yes the steering wheel control work now. The canbus decoder was not good. I have obtained a new one.

In addition, I use an old mcu 4.3.5-11-922-4501. New ones which are normally for PSA 308/408 and finish with 450101 don't work for me, except volume
[Android Head-Units] lindin34:
Anybody here knows how to fix the touch screen..which is inverted..i tried reintalling my old mcu..and sytem software...and that didnt fix it..however i was able to go into settings.touchi.io some like that and changed the position to bottom and that fixed the left half...but the right side of the screen still off ...?..
[Android Head-Units] Emil Borconi:
Hi guys.

For all those interested in getting Android Auto on the head unit, while this is not entirely possible (at least not yet), I have work out a usable workaround. The workaround is based on Mike's head unit app and an auxiliary device, see the following post for a detailed explanation:

http://xdaforums.com/showpost.php?p=64756529&postcount=984

---------- Post added at 08:19 PM ---------- Previous post was at 08:05 PM ----------

AN-21 U brother/causent head unit firmware.

Today I received a firmware for my head unit from the manufacturer, I currently have a single DIN XTRONS headunit, which shares some common ground with the AN-21 U, but it's not quite the same (Same CPU, same Bluetooth module, but totally different MCU and different system apps). I'm sharing the firmware in case any developer can make some use off it. By the looks of it, it will give a very good idea on the partition layout, recovery and boot image.

https://app.box.com/s/j9exu3ebkkztjezpcocfpvs6wyrvfkvv
[Android Head-Units] villano666:
Hi! I want to know if I can update this stereo and to which version:

Cortex A9 dual core - DDR3 1GB

Android 4.1.1

MCU 4.2.5-1-10-2101

System 2.6.70

DVD 2.13.11-hd860mc

And how can I do it

Thanks!
[Android Head-Units] chris.r.r:
what's the problem with our headunit running Android Auto, is it lacking H264 hardware support?
[Android Head-Units] lorobest:
EW842P Sd access denied

Hello all,

I have a HU named Luchi EW842P unroted, with this characteristics:

Cortex A9 Dual core

1 Gb ddr3

Android 4.2.2

MCU 4.3.10-13-10-250101

system 2.8.10

My Sygic shows to launch ''Sd access denied'' even if it worked correctly in the past, I tried to unmount and remount the memory but without success, and the app is genuine and is installed on internal memory and , clearing the cache not resolved, I also uninstalled and reinstalled the app without success ... I do not know how fix the problem ..

I read almost all the threads but could not find anything similar to my problem. You think the root could solve? can I make a full backup of sw and firmware before root? how? If necessary, is possible an update to higher version of Android? anyone have any ideas?

Thanks.
[Android Head-Units] Emil Borconi:
Yeap.... that's the issue, otherwise it should be able to run the headunit app
[Android Head-Units] Edgaras7777:
But i dont need red mod, i need just root program ;))) whats root program you use? :)
[Android Head-Units] dragoescu:
I think you are making some confusion here. Any apple that know to user /bin/su can use "root". What do you mean by what root app I use?

---------- Post added at 11:26 PM ---------- Previous post was at 11:19 PM ----------

F**k autocorrect. Any app that knows how to use /bin/su has root access. I use for example ESFile Explorer with root access.
[Android Head-Units] NMR2D2156:
I think he is looking at what apps methods do you use to root an unrooted firmware. I myself had trouble with rooting until I went to a 2.7. Xx firmware (prior to just using the redmod firmware) I found that all the methods using Baidu root and other methods would not provide permanent root on the newer firmwares after reboot. What worked for me on the 2.7.xx firmware was kingroot. This was simple and seemed to make a permanent root. I changed to redmod only because I wanted all the extra goodies and an added bonus was root was already taken care of.
[Android Head-Units] Edgaras7777:
Yes, im looking unrooted firmware methods, looking apps.
[Android Head-Units] Shadow128:
Short response to my GPS Problem.

I did the GPS fix with an external app, but I think the result was not much better.

WIth active internet connection it is quite better.

But now I made a little dirty trick on it.

I activated a Tasker profile, on which I do a task if my car would reach a location (which is only located per GPS). So Tasker activates the GPS every 30 seconds, so I've immediately GPS signal if I start my Navi App.

For the Navi App:

I'm testing since 4-5 days the new TomTom Go, which works almost perfectly on the car radio. Design, usability and speed is very very good.

For all those, who are not satisfied with their actual navi app -> Give it a try!
[Android Head-Units] dragoescu:
If you use car launcher home app it will activate gpa at boot since it uses it for displaying speed.
[Android Head-Units] villano666:
Sorry guys I've been checking this thread but can´t get a proper answer. Can I update this model to anything new? Basicaly I want to change the device appearance, I know I can do it installing a launcher but I've seen that Android 4.4.1 already updates the launcher. Also I saw redmod and I like it, can I upgrade to that? All the info is in russian I can´t understand a word of it.

Thanks
[Android Head-Units] Shadow128:
Ah ok. I use Nova Launcher on my desktop.

But maybe I'll give car launcher also a try :D
[Android Head-Units] trvbone:
Hey guys have any of you got experience with the Xtrons newest Headunit PF83MTVA?

http://xtrons.com/8-android-4-4-4-k...-function-obd2-for-volkswagen-seat-skoda.html

I would really like to get this thing as up to date as possible and would like to root it. It seems to have many similarities to other units that have the Quad core Rockchip 3188. I have yet to finish hooking up all of the accessories and cable in my 2008 VW Passat but I really like this thing and want to tweak it out. My friend also recently but a unit by JOYING with I believe identical hardware but it's got the knobs and button like a traditional VW touchscreen headunit. Any info, help points in direction to assistance or research related would be great!!! I may have to I may learn ROM building to get mine caught up as it sits at 4.4.4 currently and the UI looks so dated compare to my Nexus 6.

I'm not sure that these have all source info available to build ROMs for them? I'm pretty familiar with all the ins and outs of Android rooting flashing etc on phones, my Shield TV and other devices but this hardware is new to me.
[Android Head-Units] NMR2D2156:
I'm trying to find info on mcu updates. Is there a reason to do this and where do you get the updates / information about them. I ask because I have seen others mention updating the mcu?
[Android Head-Units] dragoescu:
...then you should have seen the sources...keep looking on this forum
[Android Head-Units] striker1211:
In short, if it ain't broke don't fix it. No need to update MCU if you aren't having issues with new system versions.
[Android Head-Units] NMR2D2156:
Ok thanks much... I am trying to find all this information... It's taking me a while to go thru the 800 pages. I will get there eventually...
[Android Head-Units] lorobest:
no idea about my problem of Sygic permisons?

Inviato dal mio SGH-I337M utilizzando Tapatalk
[Android Head-Units] kowatechtv:
Black Screen

Hello, I have a huge Problem.Ich have redmod on my device 2.5 installed and everything was okay . Everything ran without problems , only bluetooth lies not activate . I have therefore decided my original MCU to install . Then went nothing more . The device turns on , the monitor is short gray and then black . All buttons light up and the loud noise Pecher . Has the only button of a function is the volume control or on / off . All try a new software or einzuspielen MCU fail because I can not get in because update mode . Does anyone have a solution to my problem ? My original MCU is 4.3.14-1-10-610101-150525.

System V2.9.5_20150722

Android 4.4.4

Thank you.
[Android Head-Units] dragoescu:
If you had android 4.4.4 then your unit is not an-21 from this thread. Maybe the newer version.
[Android Head-Units] kowatechtv:
Black Screen

4.4.4 is what the unit says, but it is 4.2. There is an on-21 u Unit because I'm sure. Red mod ran so synonymous with no problems. Only bluetooth stopped going.
[Android Head-Units] dragoescu:
Some posts back I explained how to update when android is not booting. Hold a pin to reset and power on while you have sdcard with valid firmware. If the unit is not starting upgrade it can be bricked...but let's be positive :D
[Android Head-Units] kowatechtv:
I tried exactly that. I hold the reset button and the start button. The unit starts, which will monitor short gray and then black. Then does nothing. I sink the update is bricked.:( is there a way to update with the PC, like a handy?
[Android Head-Units] Edgaras7777:
Whats is you dvd?
[Android Head-Units] kowatechtv:
I don't now it:( I have all but not the DVD.
[Android Head-Units] Edgaras7777:
Show link, picture or somethink
[Android Head-Units] dragoescu:
He is asking about the unit model...not the dvd part of the unit :)))
[Android Head-Units] kowatechtv:
This is the eBay.de Nr. 321635435333. But I bought it at wish. But is the same unit. The Wifi is buildin,noth a dongle.
[Android Head-Units] lorobest:
Hi,

nobody have idea how can fix my Sigyc lost permission?
[Android Head-Units] Vee63b:
I use iGo, and not sure if the same fix applies to your problem, but I had to have a folder on extSD called "iGo" to let the app work.
[Android Head-Units] lindin34:
Find the original file..extract them put them on the root of the sd then flash it again..
[Android Head-Units] dragoescu:
Uf the firmware on sdcard is corrupt uou should see update start and update end message. If you do not see these messages this means that the unit is not starting at all. I think your unit is bricked. You f**ked up the mcu and since mcu is controlling everything ... Ask the seller to help you with a new board.

Using PC you can not update MCU board.
[Android Head-Units] Edgaras7777:
Maybe somethink have full software for this unit http://postimg.org/image/6muv72a8f/ ??

Or maybe know link from wher i can download full software?

Becouse asshol seller say, that he dont have.. Im Graduate to lose hope :(((

I think somethink have same unit like this...
[Android Head-Units] dragoescu:
Why do you need software for the unit? Did you tried firmware v2.9.5 from this forum?
[Android Head-Units] Edgaras7777:
Im need full software, becouse i think full software reinstall resolve my touchscreen problem..
[Android Head-Units] PhiliFall:
hi I have a problem, I have install the last Redmod 0.2.5 and the easy connect app for mirror link the phone is uninstall and I don't found a apk
[Android Head-Units] lindin34:
I think your radio has the same problem mine has..but i beleive you have a different brand of unit..it was made for audi?..maybe it is a kdl?

---------- Post added at 05:09 AM ---------- Previous post was at 05:05 AM ----------

What's the model # you have
[Android Head-Units] Edgaras7777:
Yes My car is audi a6 c5
[Android Head-Units] wanxu:
Instead of tasker, I use RedMod and there's an option to set brightness via GPS, which is the same: once the unit starts, it tries to get GPS lock. I also changed the gps conf file like the XDA TV video but I don't know if it really works.

I'm also using TomTom Go 1.8.2 and I like it. It's simple but ellegant.
[Android Head-Units] Shadow128:
Since my car android is working well, i dont want to try Redmod ;)

Tomtom 1.8.2 was also ok, but the interface was to oldschool ;) And sometimes a little bit laggy. But the newest version.. Really really good!!

Gesendet von meinem Nexus 4 mit Tapatalk
[Android Head-Units] tudorsss:
Hey guys,

I got RedMod 2.5 too; starting from RedMod2.4, since I converted from the older firmware version, I have some Radio issues; it keeps getting blocked on the same radio. Can I re-install the APK for the radio?

Also, the GPS doesn't look itself as good as it previously did, not sure why.

But I like the efforts added in RedMod, it's a refreshing update.

Thanks.
[Android Head-Units] NMR2D2156:
I have different GPS issue than what I have read about in forums. I connect fine and GPS works well using igo, but about 45 minutes into using the GPS it stops receiving satellites. I tried this consistently two times on different days and same issue. The satellites will not appear unless a cold boot and the radio sits a while. Not sure but maybe hardware issue / overheat? I know this is not a firmware related problem because the problem occurred before I upgraded to redmod 2.5 and still occurred using redmod firmware. If anyone else has experienced this and has ideas, let me know...
[Android Head-Units] Cosmas:
Has anyone ever attempted to hook this unit up to a PC for USB debugging/connectivity? I found myself a 12V 4A power supply and it successfully powered the unit so I'm working with it on a bench. That way I wont kill my car bat.

I was getting the red Unauthorized UI message so I installed BaiduEN and rooted, then replaced the file. That fixed it but seemingly stopped my front panel SD Card slot from reading any cards. So at this point I'm wondering if I can safely connect the front miniUSB jack up to a PC and do some more testing.
[Android Head-Units] dragoescu:
If you use carlauncher home app as home launcher it has a feature to set screen dim based on the day period

---------- Post added at 10:07 AM ---------- Previous post was at 10:06 AM ----------

Go to setting and clewr all data and cache for radio app. Or clear dalvik cache for all appz

---------- Post added at 10:15 AM ---------- Previous post was at 10:07 AM ----------

In settings enable usb debugging and then you can connect to a pc and use adb tool. Or you can transfer via wifi all the apks, files you need and use es file explorer to replace what you want. I personally recommend you to do a fresh install of a new firmware and go from there(I also recommend last version of RedMod). Note all the software version you have installed now (mcu and android firmware) in case you may need to revert. Procedure to upgrade using reset pin us described here.

If your sdcard is not usable for upgrade procedure (not from android) then it may be a hw problem.