yashsingh1/xdaforums huggingface dataset:
[MTCB Android Head Units Q&A] grumetecap:
Golf vi

Hello everyone,glad to be here

I was looking one huifei oem look for my golf 6 but i think there's no one

That´s why i searched this one:

ttp://es.aliexpress.com/item/Pure-Android-4-2-2-Car-DVD-for-Volkswagen-VW-Passat-B6-B7-Jetta-Polo-Golf/1853227231.html

The point it´s,would be the same than the Huifei?

The features are the same but,will be valid the improvements and updates that we are seeing in this web as in the Huifei?

Thank you for your attention : )
[MTCB Android Head Units Q&A] Warlord711:
Not sure but i think this is an older hardware version.

You "might" want to shop one of these:

http://www.erisin.com/erisin-es9401...passat-golf-touran-caddy-jetta-seat_p497.html

Erisin is a HuiFei reseller.

They also ship from UK or germany, but thats usualy more expensive, but usualy quicker than from china.

If you use the live chat at their homepage, you usualy get a special price, thats ~5 € cheaper. I got mine from china, from order to arrival 5 working days (China->Germany).

You can pay with paypal so you got buyer protection.
[MTCB Android Head Units Q&A] grumetecap:
Yes,i already saw the erisin,i like it,but first i will try to find one with the oem look but i guess the one i found its totally different than the huifei,will need different firmware,etc...i dont know why huifei didn't make the volkswagen oem look :confused:
[MTCB Android Head Units Q&A] typos1:
No, he is wrong, the one in the link you posted IS a KGL/HuiFei unit, so they DO make them with the OEM look.

No, the link he posted is a normal KGL/HuiFei unit, its not an older hardware version, internally its the same as all the other KGL/HuiFeis, it just has a slightly different front to the one in the link you posted. :)

---------- Post added at 10:18 PM ---------- Previous post was at 10:16 PM ----------

That is good news, thanks for your post, but this will surely only apply to Android apps and not work on the radio app or TV app or any built in apps as they output their sound via the MCU, not Android ?

And wouldnt this mean that you will not be able to hear anything from the radio app, tv app, built in music etc because no speaker or RCA outputs attached ?
[MTCB Android Head Units Q&A] Skitals:
I have a GS unit that looks like stock: http://www.aliexpress.com/snapshot/6158227230.html

However, I have very bad radio reception with all antenna adapters I've tried. To the point where I'm getting a new unit.

I just found this KGL model, which I believe is a new faceplate: http://www.aliexpress.com/item/2-DI...-Pure-Android-4-2-Car-DVD-GPS/2009322551.html

I ordered from this seller for $380 shipped: http://www.aliexpress.com/snapshot/6222851414.html

I will report back when I get it. But after having my GS model, the volume knob is a must, as well as the track forward/back buttons. The Equalizer button is also handy when switching between sources (poweramp -> radio sounds completely different). Finding a unit with all these features is a challenge! So many have no volume knob, or whacky buttons.
[MTCB Android Head Units Q&A] NorthfieldMaui:
Hey! I'm having the same issue with my stereo...Every time I get out and back in I have to reset the amp/eq settings...Were you able to figure out how to save it yet? Thanks!
[MTCB Android Head Units Q&A] mikejclark:
I've just updated android on my KGL 7683 (Audi a3) to latest build (27/08/2014). I'd now like to update my MCU, but I'm not sure what version I'm supposed to install. My current version is MTCB-KGL-V1.77. Can I update to MTCB-KGL4-V2.02? I'm not sure what the number 4 represents? Thanks!
[MTCB Android Head Units Q&A] typos1:
A few people with the HuiFeis have reported similar problems with the radio, I dont think anyone found out the cause.

So I m not sure getting a HuiFei guarantees it will work, not that I m suggesting your new one wont work.

The GS models look like the Huifeis and have the same launcher, but the spec thats specified by the seller is the same as the Klyde's. I dont think anyone has verified that the GS ones have different radio ICs to the HuiFeis (by going into the factory settings and seeing which radio chip setting it is on) so we dont know for sure. If youve still got yours, which radio IC setting (TEF 6621/6624 or TDA7706) was it on from the factory ?

It seems to be an occasional problem, maybe down to poor construction on individual units or poor quality control in the factory where they make the radio ICs ?

I certainly found it a challenge to find one with all the features I wanted !
[MTCB Android Head Units Q&A] coyttl:
This is great, good job! What devices would be compatible with this? (Haven't had an Android unit that would support this, so I haven't done any previous research..)
[MTCB Android Head Units Q&A] Skitals:
My GS unit is TEF6606/TEF6624. Do you know which units have the TDA7706 IC?
[MTCB Android Head Units Q&A] ProfessorKnox:
The TV tuner that would be great if you provide your experience about. I have TVbox but I can't control it via the HU's touchscreen and startet twoattepts here to find others having a TVbox but looks like that there's noone out. So looking forward for your report.
[MTCB Android Head Units Q&A] Reptile-X:
Hi, I have a small electronics lab, so when I received the unit with the TV box, I hooked it together and tested it, reception was good inside the house but I am not sure how it is in the car, we have only 4 free to air digital channels but that’s enough for me, my main concern is where to put the antenna of the TV box discreetly, but we will see.
[MTCB Android Head Units Q&A] typos1:
Yes, it says on the first page, there is a pdf with the specs that are known for all versions (apart from the GS ones because nothing has been confirmed) yet.

Like I said, all of the adverts for them I have seen say it has the same spec as the Klyde versions, but the Klydes have a TDA7706 radio IC and yours is a TEF6621/6624.

So it seems the adverts are wrong and they are basically the same as the HuiFei/KGL ones.

I seem to remember someone with bad radio reception saying they tried TDA and TEF settings, I take it you have ?

---------- Post added at 03:22 AM ---------- Previous post was at 03:15 AM ----------

Any automotive amp with an SPDIF or digtal co-ax input socket.
[MTCB Android Head Units Q&A] Stank0:
Yes, that is suspicious that it says it's unmounted. I'm almost sure that when I click the card in, nothing happens as well but the card works fine. (i can seeit in Solid Explorer) A;though I've got a different unit model but also two card slots.

So... if you copy the update.img and mcu.img on the root of you SD card, click it in and reboot the unit, nothing happens?
[MTCB Android Head Units Q&A] aluver:
Yes, of course. I told about it in my some early post. But I am not interested for the radio or TV. Only music.

But I know some amps, that have the ability of double pluging (line in and digital). With logical switching to digital only if any sound exists there.
[MTCB Android Head Units Q&A] sprfly:
Yeah tried that, nothing happens. I had to move the files from the other slot to the internal SD to update.
[MTCB Android Head Units Q&A] ptclabs:
I put HF 2.02 on my GS unit. Everything started fine. All the microphone mute problems are gone. Much better.

Only 2 issues

I think GS is just a HF copy with a slightly different mtu program

1. Lights are always on

2. Key map for front buttons is messed up.

EDIT Replacing the mtu with the GS one and update with the HF 2.02 is DEFINATELY the way to go. All buttons correct now, and microphone mutes properly.

I still cannot get bluetooth contacts to add correctly. Maybe I am just an idiot, but is there something I am missing? Connect the bluetooth, hit the refresh button, allow the connection on the phone.

Is there something I am missing?????

EDIT the application bluetooth phonebook fixed the contact problem

I will try to use GS MTU and HF android and see if that fixes the buttons.

GPS radio etc all work fine.

I might try the 2.02 keymap 4 to see if it works correctly. Sick of reloading everything on it though. The back flag is turned off in /data/data/.comblahblahblah/settings.db so google does not back up apps.

Finally got usb debugging and developer menu workin
[MTCB Android Head Units Q&A] MaurizioSalv:
upload image my unit
[MTCB Android Head Units Q&A] dark alex:
Yes! I also have that one.

The numbe ris for the keymap
[MTCB Android Head Units Q&A] ptclabs:
cant figure out how to delete this wrong thread
[MTCB Android Head Units Q&A] xrapidx:
I've been away for awhile... see a ton of posts :p

I have the KGL-7610, will version 2.02 load without button issues?
[MTCB Android Head Units Q&A] dark alex:
Did you check the list? Whats your exact MCU Version? Whats your Car Make
[MTCB Android Head Units Q&A] Dareksa:
I also have KGL-7610 (universal) and for me it worked without buttion issues but appeared another problem, with radio. Radio application was unable to find the radio stations on mcu 2.02.

Now I have mcu from 1.99 and update from 2.02
[MTCB Android Head Units Q&A] uncleg:
Nobody knows about that ?
[MTCB Android Head Units Q&A] typos1:
Right, I see, sorry if I missed it previously, connecting analogue and digital to the amp would pretty much cover both angles :)

Why dont you just give up and have one SD card and have the maps on the internal SD card, then surely your problems are sorted ? Well, as long as they send you the buttons.

Yes, that does seem the case - the specs for the GS versions always seem to be listed as the same as the Klydes, but Skitals' GS units has a TEF6621/4 radio IC and the Klydes have TDA radio ICs. We dont know yet if the MCU is different or the same as well, it might be different or just have been re-named.

Yes, yours in not the same as the units in this thread, you have a different CPU, a totally different MCU ("Lemon" !!?) and a much more update date kernel, I think you should try the WD8801 thread : http://xdaforums.com/showthread.php?t=2618348
[MTCB Android Head Units Q&A] krebs8:
Is a TDA 7706 radio IC (STM) better than a TEF 6606/6624 IC (Philips/NXP) ?

The TEF in my Erisin ES9401 (KGL) had too less treble compared with mp3 or DVD sound.
[MTCB Android Head Units Q&A] ChillyCat:
Placed an order couple days ago: KGL-7303 ---- 2009 Ford F150.

Ordered thru Shenzhen Kai Ge Le Electronics Co., Ltd. & Coffee Yang is the sales person

processing the order. [http://kaigele.en.alibaba.com]

I'm thinking this might be the same place as this Keylo person, but uncertain. The ad inserts

all look exactly the same.

This is to replace the wince unit I got in September , but was a total piece of junk, and never did

work very well:

Car DVD Ford F150 Auto PC Navigation GPS Multimedia S100

The optical drive puked......and now the radio [am&fm] dead too.

Ordered thru AliExpress & Quick Krist was the rep. He's wanting me to pay aprox $200 to

return for repair and return. Didn't pay all that much for the unit, so eating this loss won't be

all that difficult. I've been lucky with numerous purchases thru China, but aware that warranty

work is made just about impossible. It's certainly a gamble.

Hoping very much this Android version will come thru un-scathed and working.

Just read and re-read lotsa good stuff by you Guys.....looking forward to having a working HU
[MTCB Android Head Units Q&A] jayroudy:
music and mirror

So far while messing around with the stereo and have not been able to to full install a I am dash mounting usb ports and doing amp install. Overall pleased with the unit. Full install will be this week. So far I have not been able to successfully mirror the display or be able to read the music of my phone through usb. For some reason the unit did get stuck during boot and had to recover with a file sent from mfg. Any info on the mirrorlink and getting it to read my GS4 music
[MTCB Android Head Units Q&A] ChillyCat:
Thinking that's a common issue currently. Probably allot easier just using the BT feature (for now)
[MTCB Android Head Units Q&A] gardarik:
I've got my unit (Universal KGL-7610G from KGL products list) shipped and installed.

So far, everything seems to work fine. Except Steering Wheel Controls.

I connected 2 wires to the unit's KEY1-5V and KEY-GND. Checked with multimeter.

I could see resistance values changing while pressing SW keys. Tried to assign buttons through

builtin Steering Wheel application. But unit doesn't react.

So my question is: Does anybody know what kind of values it expects to receive ?

My car is Hyundai SantaFe 2007 and as far as I know it doesn't have CANBUS.

Sorry for my english
[MTCB Android Head Units Q&A] Orisai:
The SWC controls in the 2007 Hyundai Santa Fe uses digital signals to control the OEM headunit. You'll need an adapter such as Axxess ASWC-1 to make them work with your new headunit.
[MTCB Android Head Units Q&A] ty4sound:
where to buy

I'm looking to buy 1 unit not 4 so where is the best SAFE place to buy 1 from for a AUDI A4
[MTCB Android Head Units Q&A] nexgen10:
Do you want the audi specific model or the generic 2 din?
[MTCB Android Head Units Q&A] drakeshreddy@ymail.com:
I am Also looking to buy one for 2009 Honda civic USA.

If there is a URL where i can buy it please IM me or Reply here.

---------- Post added at 07:15 AM ---------- Previous post was at 06:50 AM ----------

Sent you IM,
[MTCB Android Head Units Q&A] webdude12:
Has anyone gotten a reply from Keylo in the past few weeks. I have sent her 4 emails, and not gotten a single reply to one of them. I have been asking about the 1024 x 600 unit and the source code to the kernel. Does not give me a good feeling if I can not even get a simple reply.
[MTCB Android Head Units Q&A] ty4sound:
2002 Audi A4 model not the universal.
[MTCB Android Head Units Q&A] nexgen10:
I've been dealing with a guy named Yu Hanker (hanker.yu on skype) from HuiFei. He's been very helpful.

As far as getting source, I don't think that's going to happen realistically. In my conversations with them, they are very guarded of their source and product pictures. It's not too difficult to understand why though. Copyrights are a joke in China, and the only think protecting their intellectual property is keeping the source code private. I don't believe the base OS is custom, but I do think they make mods and tweaks to the OS, which is the only advantage they have over the competition.

Now with that being said, it has to be possible to find the source of the kit they're using.

People in China are well educated, but they're not better educated than most of us. There is no way all the companies in China are "manufacturing" these tablets, tv dongles, and car radios organically. There has to be a "kit" they are buying from. I read an article last year about the tablet boom in China. It's like their PC boom the US experienced in the 90's, except the tablets are dirt cheap to make compared to what PC's cost us 20 years ago. There are people in china building tablets in their kitchens. All the parts are available for dirt cheap and only need assembled, with some soldering required. Some of these people even have IR ovens in their freaking kitchens to attach the BGA processors and components to the PCB's and are cranking them out by hundreds a week.

I expect the car PC is no different. While it may take more MFG gravitas to pull off than the tablets, it can't be by much. So find the source of these kits, and you'll find the source of the android OS being used. I don't believe these guys are dev-ing their own android flavors. Otherwise we'd see kitkat units emerging on the market at this point.

Where to start looking, I have no clue.....
[MTCB Android Head Units Q&A] jereid:
This is the individual with whom I worked, and found him helpful and forthright with my questions. My unit seems very physically solid, wobble-free knob and a good solid feel. Power goes on later this week when I can focus on tyask.

Any recommendations whether it is worth using a regulated power supply rather than just wiring into a vehicle's power bus direct through a fuse?
[MTCB Android Head Units Q&A] nexgen10:
The 12v rail from an computer atx power supply should work.

---------- Post added at 02:28 AM ---------- Previous post was at 02:20 AM ----------

http://www.instructables.com/id/Wir...headunit-up-indoors/step2/Preparing-your-PSU/
[MTCB Android Head Units Q&A] ChillyCat:
Absolutely no need for a power supply. The 12V source in your vehicle, will play nicely with the radio
[MTCB Android Head Units Q&A] 1-2-Hak:
Finally got my unit.

Check my factory menu - no usb debugging?

I have the KGL-7650G any ideas?

** was able to use z4root to get usb debugging but cant get device to detect in any boot - using front usb.

connected using adb over wifi.

Flashed CWM recovery but get blank screen

Flashed TWRP recovery - it comes up but the touch screen doesnt work - maybe mouse?
[MTCB Android Head Units Q&A] drt1394:
Interesting point on the kit. Of course the original android source is from the Rockchip RK3066 dev kit.

Something intriguing I noticed is that one of the images in the selection of the car logo is Dynavin USA. This company is a pretty common name in the BMW scene for selling aftermarket android radios and they have been around for a long time.

The limiting factor will be (IMO) communicating with the MCU. If we can crack whatever communication protocol is used there then we should be able to start from a vanilla Kitkat build and add functionality back in as we see fit. Of course this would be a huge undertaking rewriting all the apps. And may not end up even being worth it as they seem to work pretty well to begin with.

From my talks with Hanker Yu, it sounds like their engineers don't develop the software. But he does say that they are the manufacturer (whatever that means). I'd love to get my hands on the source code for both the MCU and the android side.
[MTCB Android Head Units Q&A] Orisai:
nE0sIghT or someone close to him in the WD8801 thread managed to decompile the Luyuan APKs and posted their sources, including the MCU interface and protocols. If the developers who made the APKs for the HuiFei coded the MCU protocols into the apps themselves and not as drivers compiled using the RK3066 kernel source, then cracking the protocols should be piece of cake for someone with the same knowledge.

I believe the main cause of all these software bugs and defects we've found so far in these units is how poorly non-Android hardware is handled by the software.

If they coded the protocols as drivers in the operating system itself like in a phone or tablet, they would've worked much better and allowed things such as SWC in third party apps like Poweramp or proper multi-channel audio (radio+navi+media players) out-of-the-box.

We already have the RK3066 sources and we know what non-Android hardware is used to build these headunits. The next ingredient would be the sources for the HuiFei APKs, which I believe could be decompiled like the Luyuan ones. Then, have some volunteer or paid (donations?) developers work on integrating the hardware code into Android itself and proper, clean, and safe apps for the headunit's functions.

Something more ambitious would be to make the headunits in America, like this company is already doing, putting Intel Core i5/i7s on top of mini-ITX boards inside 2din cases, running Windows 8 (wtf?) right into your car's dashboard.
[MTCB Android Head Units Q&A] nexgen10:
If we can get the source, im sure we could find some paid devs to make improvements.
[MTCB Android Head Units Q&A] rhg84:
The build on those headunits would be awesome. The insides and software not so much. Why would someone want/need all that power in their car.
[MTCB Android Head Units Q&A] drt1394:
Mind linking me to the place where ppl successfully reverse engineered the Luyuan MCU protocol? (Sorry, I searched, but didn't see anything and am lazy). There is a slim chance that the MCU is the same between these units (No idea how to confirm this).
[MTCB Android Head Units Q&A] Gemok:
Right I've got my steering wheel controls to work.

I ended up ditching the canbus adaptor that came with the unit and getting a connects2 swc adaptor, cutting and soldering wires using a pinout for a standard iso for the connects2 and the one one on top of the unit to get them in the right place.

Next problem I've got to work out is how to switch to audio Aux automatically when music from the CD changer is playing.
[MTCB Android Head Units Q&A] W12d0m:
Someone can tell me how to Control the Volume of single apps?

IGO Primo is hard to understand because its very quiet ( in app volume is set to the max)

and for example Blitzer.de (german app to protect you from speed traps) is much too loud... ( in app volume settings dont show effect on the output volume)

Thanks, Moritz
[MTCB Android Head Units Q&A] Warlord711:
Überprüf mal die Settings in den Werkseinstellungen.

Da gibt es Werte für Radio,DVD, GPS usw. die du abändern kannst. Evlt steht dort Murks drin.

English:

Check the audio settings within factory settings. You can usualy adjust volume for DVD,Radio,GPS apps there. Maybe its misconfigured there.
[MTCB Android Head Units Q&A] mikejclark:
Good to know thanks.

Have you had issues with sound from the rears? If so, what have you done to resolve it? I'm using a high to low line level converter that was fitted with my old after market unit that didn't have rca outs. Does the job but not ideal
[MTCB Android Head Units Q&A] coyttl:
Sorry, no, I meant what USB devices to plug into the headunit. :D Since I don't think I've seen a unit provide SPDIF out yet.. (Be a neat addon..)
[MTCB Android Head Units Q&A] typos1:
Cool, you got a cd changer hooked up ? didnt realise these units would do that, what connector does it use ?

---------- Post added at 02:57 PM ---------- Previous post was at 02:53 PM ----------

Philips sold their Philips Semiconductor Ltd division to NXP, so its not really Philips.

Your ll have to ask someone who has had experience of a Klyde unit AND a HuiFei/KGL (TEF6624), or GS (TEF6624), or Roadmaster unit (TEF6621) for an idea of which is better.

---------- Post added at 02:59 PM ---------- Previous post was at 02:57 PM ----------

Anything really, mouse, keyboard, media device camera etc, the usual (dont forget to utilise SPDIF/digital co ax your ll need the aforementioned digital amp).
[MTCB Android Head Units Q&A] Warlord711:
Is there a way to flash the mcu.img without the need to flash update.img ?
[MTCB Android Head Units Q&A] dark alex:
Yes just do as described every few pages in this thread.

The Trick is making update.img invalid

[MENTION=4557987]mikejclark[/MENTION]: No issues but I am not uding the original sound system but I can say that both, RCA and highlevel outputs are working.
[MTCB Android Head Units Q&A] Warlord711:
Ah great ! I thought whole update process stops then.
[MTCB Android Head Units Q&A] Gemok:
You can also flash an MCU by booting into recovery (instructions in first post of thread) and choosing the right option. Update still needs to be on the gps card though
[MTCB Android Head Units Q&A] CerberusBR:
Hello

I'm unable to install Navigon, Sygic or Waze in my KGL-7091 with firmware 2.02

All those apps appears as incompatible at Google Play

Some one have this type of error too?
[MTCB Android Head Units Q&A] george2350:
MarketHelper

Please use markethelper and set your unit to something like S3 on ATT and you should be able to do what you are trying to do.