yashsingh1/xdaforums huggingface dataset:
[Android Head-Units] shadowmike:
[MENTION=4736782]kaween[/MENTION] I'm all self taught, from html, to phones and electronic, to working on my own cars. 14 years ago I started my own website coding was fun. I was only 14 it wasn't great but I loved it. I know a little in a lot of areas lol. But when I can know the extra things. Just helps me even more...

Having kids has slowed my dreams a lot. So I learn more when I can.

sent with HTC ONE M8

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[Android Head-Units] wanxu:
Thanks, Kaween. I'll see what I can do! I'm not really a car hardware man :P I just installed some units but easy, plug&play.
[Android Head-Units] kaween:
[MENTION=4674232]wanxu[/MENTION] : neither of the two proposed solutions require much knowledge or hardware experience. Both of them "come inbetween" radio and car battery.

The pico-ups solution has the advantage of being more flexible in terms of capabilities and "different than intended usage", and is able to provide a solution when your car uses a mechanical power-cut to non-essential systems during crank which the second solution won't be able to do.

It also is able to deal with super-low spikes in the car's power supply system which can get below the switch-off voltage of a unit even with a fully charged and healthy battery which also can occur and in such conditions, neither the "run wires directly from battery" not the stabilizer will do you much good.

. It all depends on the type of car you have and how the manufacturer implemented the cars' electrical system if you really need the Pico solution or can get away with the stabilizer. In terms of cost they're not that different really, although the pico-ups solution may require some extra thought in terms of stashing the extra battery in a convinient space in your car.

[MENTION=822076]shadowmike[/MENTION] : and suddenly I feel old again.

Oh wait, I am. :silly:
[Android Head-Units] Travix:
I have the same problem with the dvd drive, it's gone. It won't even suck dvd in.

Any fix that I could try?
[Android Head-Units] hamid_valad:
Huh, i think he should give versions with 6-7 firmware files a shot.

anyway, he doesn't use dvd very much. But he uses music app all the time and it crashes a lot.

any idea how to fix that? Thats far more important than dvd drive not working.
[Android Head-Units] kaween:
Did that occur after a firmware flash or did it simply went *poof* ?

If it occured after a firmware flash, I'm currently not aware of anybody who revived his DVD succesfully. Cool_Head had the same issue, later he replaced the mainboard and the DVD remained dead.

If it was flash-unrelated you might want to inspect the flatcable running from the DVD to the MCU.

[MENTION=2253237]hamid_valad[/MENTION]

Question : what happens when you use a 3th party player (PowerAmp, Rocket Player ....). Does the problem occur when using different mediums (USBstick ? SDcard ?)
[Android Head-Units] p64imp:
I'd like to think that anyone coming to this thread on a mission has some degree of quantifiable wisdom. This device is not something a common car nut would happen upon unless there is an underlying passion for geeking out to complicated tech ;)

I'm a software engineer myself. Hardware and tech is a side hobby to me. I love getting inside hardware and making it do things it was not designed to do, unlocking its potential. My formal education in hardware is google, and it has served me well on a case-by-case basis from console modifications to phone hacking etc. I primarily just love open access to media in all of its forms. When i came across this stereo i nearly cr@pped my pants. ;)

That's why i need to resurrect this beast. Nearly gave up and bought a new one outright till i started talking to kaween. ^_^-b

awaiting Saturday for the tech's findings... the impact was not major Shadow, but learning that the AN21 is not the most amazingly assembled items in the world, i'd not be a bit surprised if the impact was enough to displace a fan connection or w/e, causing the gradual process of overheating + thermal damage to the ARM to set in. Fingers crossed...

if that's the case, i'd expect that the firmware also flashed the drive itself. A bad flash to a drive would require extraction of the chip and a re-programmer to get it up and going again. Something similar to a Galaxy S3 radio flash using FW from a different provider ( sadly speaking from experience). Results in a hard brick that can only be restored in the manner i stated above.
[Android Head-Units] roystervi:
video player

Does everyone video player stop playing when they hit the home or back button? I haven't notice it B4 because most of my music on my unit is music videos. It seem like video player will not plat in the back grounds like the other music players, ie: radio, mp3 player, and ipod.

can someone check their unit and post

thanks in advance
[Android Head-Units] shadowmike:
If you use the video player in the app folder on the file repo, in settings you can set it to play in background.

sent with HTC ONE M8

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[Android Head-Units] kaween:
So if I understand correctly, it's actually the plastic bezel around the button that prohibits free motion of the button, yes ?

I don't know where your power button resides but if it's a plastic button that sticks out of the front of the radio how about "US Army's Favorite Tool" ?

Don't laugh, but a carefully placed little squirt of WD40 has helped me in dozens of such cases where powerbuttons of radios, computers ect ect tended to get stuck at the most unconvinient moments. Just be sure to wipe the excess immideatly, actually pushing the button repeatedly while doing so. And don't overdo it ! Depending on the button assembly and how it works+how much space you have, if you want to do it more carefully take a Q-Tip, give it a good dose of spay and "paint the button" where it borders the bezel.
[Android Head-Units] shadowmike:
I havnt thought about that. I worked on cars for 9 years, I'm very experienced with the miracle spray..

My power button is labeled dvd in this pic. But it's the same type of radio

sent with HTC ONE M8

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[Android Head-Units] kaween:
Yeah, at least the stock video player works that way on my unit too.

[MENTION=822076]shadowmike[/MENTION] : on such a situation, I give you a good chance solving it with what you call "miracle spray" -a name well deserved.

Or use a Q-Tip saturated with it and "paint the outlines of the button" in the gap between bezel and button. With a bit of luck that should solve your issues.
[Android Head-Units] shadowmike:
Stock vid player also stops when in reverse

sent with HTC ONE M8

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[Android Head-Units] roystervi:
and thaks U 2222

I was thinking the same but was not sure

any good replacement for vid in the until that will see ext SD ?
[Android Head-Units] shadowmike:
Mxplayer my friend

https://yadi.sk/d/UBg5mGpNcqaza

sent with HTC ONE M8

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---------- Post added at 07:39 PM ---------- Previous post was at 07:31 PM ----------

I'm thinking, adult humor (ky) or vasoline might be a better option.

But definitely going to be done

sent with HTC ONE M8

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[Android Head-Units] shadowmike:
A pot hole could also have enough force to cause the radio to do the same thing.

A pot hole can bend metal, I'm sure the 5star Chinese manufacturing could also get a little messed up.

sent with HTC ONE M8

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[Android Head-Units] stricnin:
[MENTION=2682244]stricnin[/MENTION] : have your toyed with the audio priority settings ? Try "3th party setting" instead of "intelligent".

Thank you. You were spot on. Has anyone been able to get the power off delay to work?
[Android Head-Units] shadowmike:
It's a shutdown delay. That way it doesn't have to reboot when you turn your car back on.

In order to have a shutdown delay, your have to have a separate power source for the radio that has a custom timer or switch.

I have my acc powered to constant power. So I have to turn my unit off when not in use.

sent with HTC ONE M8

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[Android Head-Units] stricnin:
Yeah I figured as much. I purchased this a few days ago. http://www.ebay.com/itm/320878308139?_trksid=p2060778.m2749.l2649&ssPageName=STRK:MEBIDX:IT I'm hoping it will do the trick. I hate rebooting for short stops.
[Android Head-Units] Ackms421:
Okay I updated to 2.88 and now my bluetooth doesn't work. It has worked on a call, but not for streaming music from my phone. If I downgrade to the 2.8.6 bluetooth does that just replace the interface or would it actually change how the bluetooth operates? Either way, any suggestions for the bluetooth issue?
[Android Head-Units] shadowmike:
Check Bluetooth settings in radio, it may have reverted to carkit

On your phone Unpair the radio and connect to the radio again.

Restart both your phone and the radio.

Open Bluetooth on the radio and open the music screen.

Press play, next pause and play. It should be playing again.

sent with HTC ONE M8

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---------- Post added at 03:57 PM ---------- Previous post was at 03:29 PM ----------

I have a 2.8.8 system image that's a few megabytes bigger than the version we've been using. I believe it's from a different manufacturer.

I'm going to load it in a little later to see if my mcu is included in it.

Edit it turns out it has the red ui warning. Ours doesn't have it.

sent with HTC ONE M8

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White screen ? This was posted on a Russian page I believe it's an21 screen but not sure

https://yadi.sk/i/Nev-q7u5ascL7

---------- Post added at 04:52 PM ---------- Previous post was at 03:57 PM ----------

Has anyone tried to use a Wii mote with the radio ? Would make a lot of tasks easier. And allow us to have emulators and roms

https://play.google.com/store/apps/details?id=com.ccpcreations.android.WiiUseAndroid

If anyone's

sent with HTC ONE M8

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[Android Head-Units] Ackms421:
Thanks. What does "it may have reverted to carkit" mean and would I need to repeat this process every time I turn the radio off?
[Android Head-Units] shadowmike:
Stock Bluetooth setting, the radio is named carkit_tw I believe

I change mine to Chevy so on my phone the Bluetooth settings shows my radio as Chevy, but after updating system if Bluetooth resets it will be Carkit_tw

sent with HTC ONE M8

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[Android Head-Units] Ackms421:
Ok gotcha. Unfortunately none of that applies here. The Bluetooth connects but no music is heard when playing on my phone while Bluetooth is connected. This follows updating to 2.8.8. Any other ideas?
[Android Head-Units] shadowmike:
I understand Bluetooth connects lol all of what I said applies.

What music player are you using on your phone

I said what I said to do out of experience not out of trouble shooting.

sent with HTC ONE M8

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[Android Head-Units] Ackms421:
Thanks again for your input, but no it does not all apply. If the name of the connection had reverted to car kit then the phone would not be (automatically) connecting at all. The bluetooth is connecting just fine. It's just that when music is "playing" on the phone, it's not playing on the speakers. And yes, restarting a tech device does often fix a problem so I guess that does apply. I am using Google Play Music on the phone. I guess I was more asking is there a known issue with bluetooth after upgrading to 2.8.8. But thanks again for all of your input.
[Android Head-Units] shadowmike:
Not true at all my phone still connects when it reverts after a upgrade in general unless I 're pair Bluetooth.. otherwise I have to mess with the audio screen on Bluetooth for a few seconds.

There is no known issue, as 2.8.8 was supposed to fix Bluetooth issues as per the Russian pages for our devices.

I didn't do the lube trick fast enough.

I'm currently on 2.7.40 thanks to a 2℉ night.

sent with HTC ONE M8

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[Android Head-Units] Matt Kirby:
I've started using Smart Launcher 2, after seeing it in this thread - and I really liked the option of hiding the Android system bar at the top.

I've now found an app that will hide the system bar everywhere - full!screen (https://www.google.com/url?sa=t&rct...=YEj-C3VHIrgq1UwXkI75PA&bvm=bv.80185997,d.d2s). It does require root.

This makes the device look more like a custom automotive entertainment and GPS system, and less like an Android tablet stuck in the dash.

Just thought I'd suggest it in case anyone else finds it useful.
[Android Head-Units] shadowmike:
Have you checked out http://xdaforums.com/showthread.php?p=56831559

sent with HTC ONE M8

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[Android Head-Units] p64imp:
Hi Guys,

So i just got back from the stereo shop. Sadly that was a wasted trip... the owner did not process that i told him "unbranded import" on the phone. He was checking me in, asked me the stereo model, and the instant i said unbranded he showed me the door. Apparently he sends the head units out to the manufacturer for inspection if it goes beyond a loose wire in the back which he did not tell me on the phone. At any rate, wasted trip, but at least i am not out the inspection fee.

So i took my car home, popped it out of my dash in 2 min and it was just as i expected... the fan is not spinning. This is what caused my heat damage. I have it sitting on my work bench now. I'll be using kaween's tutorial to strip it down and photograph the main board later. Hopefully the one you have is a match kaween, that'd be a life saver for sure!

Optionally, do you think i should look in to a local electronics shop re-flowing the PCB? or knowing that i'm having freezing issues (that are now much faster with my repeat testing with no fan, and my screen coming on every time i switch to reverse with the backup camera) would a PCB reflow not solve the problem? (AKA do i have chip damage at this point?)

and once again i can't express my gratitude enough to all of you on this forum.
[Android Head-Units] p64imp:
Ok, Here is the pic:

[IMG="AN21"]http://s1.postimg.org/dvoxepjgf/20141122_110114.jpg[/IMG]

Looks like mine had a heat sync. After looking at the board i realized this is no simple swap. There are about 100 drop solder points attaching this board. Looks like a tricky operation...

What is your diagnosis for me kaween?
[Android Head-Units] kaween:
First of all, I'm surprised and somewhat relieved to see that cooling block there.

It means 2 things :

1) some manufacturers have understood the ARM chip without cooling block is not a good idea.

2) sadly enough it didn't save your unit from going down. :( Of course the question remains if it's really the ARM which is the issue, but based upon my experiences and your description of the issue, I remain relativly sure about my diagnosis. This ALSO means that my modification with the silent fan may turn against me at some time : you can NOT hear my modded fan running. So basically, I also do NOT know if it would fail.

Hmmm. (scratches head). Not good.

Swapping the ARM board CAN be done, but not without propper equipment. Is a reflow going to help ? Maybe. At this point in time, you have nothing to loose now do you. So if I was in your position, go take that board to good electronics workshop where they still can repair stuff instead of just tossing it (a dying breed I might add). If even those guys say "can't do it" or it still is dead afterwards, a replacement of the board will be needed. Also, swapping the ARM is only viable if you have another ARM board to swap with. Haven't seen sepperate ARM's for our units so far, only complet and mounted on the MCU board.

Make a complete picture of the board's top so I can see what kind of connectors you need. Depending on that, I may offer you a solution myself or I at least will know what I have to ask around for.

PS : to try and pinpoint the issue : buy a can of electronic freeze spray if you don't have it lying around. Mount your unit so you can power it, and blast that cooler and vicinity with freeze spray. Wait a couple of seconds, power up the unit. If it boots, keep giving intermittent spray bursts on the cooler body. If it keeps running that way, you're sure you've found your culprit.

Actually, those visable solder joints are not your main problem : they can be reflowed by anyone with a bit of flux and a halfway decent small solder iron. It's the stuff that's under that cooling block which is probably your main source of headache. But the freeze spray routing may give some conclusive info about that.
[Android Head-Units] Ackms421:
After unpairing and repairing the phone I was able to play music via google play from my phone to the stereo. But I have to repeat that process every single time I turn off the stereo. Any idea what is wrong here?
[Android Head-Units] hamid_valad:
Sorry, it's not my HU, it's my friends. i told him to install 3rd party apps, and i'm waiting for his replay.

do you guys know any firmware version with 7-8 installation files? (i'm pretty sure one of the files contains DVD kernel, and in one of the 2.6.* version's my friend installed, the file is corrupted, or missing, or is for NO DVD versions, so it formats the partition)

btw, i want to update my MCU (everything is very laggy, specially the steering wheel buttons) current version is 4.1.0-7-10-2501

my friend's version is 4.2.6.1-7-10-6501

i couldn't find an algorithm to know what MCU version suits me. so if anyone knows, please be kind enough to help me.

also, if i want to change the bt module, (bt4 to bt6 i guess), can you tell me where should i buy the module? and guide me on a how to?

about the bt pair issue (not playing), i suggest that u unpair, then clear cache and data of BT app on HU, (maybe on both phone and HU) then try to reconnect. it should ask for permission to pair again. i one had a problem like that (not on the same unit) and it helped.

about the heat issue and screen going white, we had the same issue in my country, can you be kind and take some pics of the screen when it happens, i want to make sure its the same problem.

also, here it happened in less that 3 month after installation! and the guaranty would replace it once for free.

after a few occurrence here, i got scared a bit! so i set my fan to be on all the time (in unit settings)

when nothing is playing you can hear the fan. but if you are listening to anything, the sound is really hard to notice.

they told us that this issue happened in old versions and they had it fixed in the new ones. god knows if they are right!!
[Android Head-Units] kaween:
Greetings !

In terms of buying a BC6 module, there's been a forum member recently who had them on sale

http://xdaforums.com/showthread.php?p=56403638&highlight=bc6+russian#post56403638

So that would be the first place to start. If that doesn't turn up anything, let me know, I may point you to some alternatives.

Finding out what MCU you need can be done using the MCU Caculator found here : http://an21u.coldzone.ru/

That should get you on the right track at least.. Basically it's simple, you'll need some MCU ending with "7-10-2501", although I won't EVER advise somebody to mess with their MCU unless something's "broken". I've had far too much trouble getting mine back on rails after it was overwritten by a wrong one which I did because my seller told me I had to do it ....

Shadowmike provided us all with his brilliant file repository so what you need will be found there, I've no doubt.

On a personal note : I kinda doubt updating an MCU will have much influence on your complaint about slow reaction -but I could be wrong-.

As for the fan situation : I've noticed my first unit had the fan policy set to "middle" when it came from the seller. Later versions I received all put the fan on a default value of "run always". Not sure if that's their idea of a solution of course. P64imp's device had a cooling block mounted from the factory (which I've never seen before on any AN21) so that too may be a part of their solution.

HOWEVER -and this is again speculation on my part- : the cooling block I saw on p64imp's picture is pretty small and low, certainly not high enough to make contact with the bottom half of the housing.

Why do I think that is important ? Because if you look at how the AN21 is build, the fan actually tries to force an airflow on the wrong side of the mainboard : the sits at the topside of the MCU board, yet the ARM chip sits underneath that, on the bottomside of the MCU board. There's very little spacing around the MCU board and the housing itself, so I'm really doubting there's much airflow even with that fan on constantly running.

That is why I decided to make my cooling block make physical contact with the metal bottom part of the housing. A cooling block only makes sense if the cooling block can dissipate the buildup heat, and if the airflow isn't good enough, it won't make much of a difference. But by letting the cooling block make contact to the metal body of the unit, heat energy will be dissipated to matter what.
[Android Head-Units] hamid_valad:
Thanks for your answer.

i used the MCU calc. and i found out that my friends unit has BC6 module. is that right? is there a way to find out? i mean by ripping the HU apart and looking at the boards.

also shadowmike's file repo is great, i couldn't find a version ending with 7-10-2501 in it. neither i found a version for 2.8.8

i'm really starting to go for the cooling block. i'm not really good with electronics. if there was anything mechanical, i would go for it instantly. and another problem is that i live in Iran, so no amazon, no ebay, nothing! i don't know where to buy the cooling block!