yashsingh1/xdaforums huggingface dataset:
[MTCB Android Head Units Q&A] 6vince:
video app to video output

Is there any way to permanently mirror the main screen to the video output so It can be displayed on a headrest monitor?

If not all video, at least the video app would be nice because right now I can only get the DVD app to output to the video output which is pretty useless.
[MTCB Android Head Units Q&A] haxigi:
yes im sure. Without this booster, theres no reception
[MTCB Android Head Units Q&A] typos1:
Pretty sure it outputs the DVD only.
[MTCB Android Head Units Q&A] Enc0der:
Hi,

I'm looking to buy a new HU for my VW Jetta, and I've found a few new huifei models that are vw-specific and support all of the built-in car features.

For example, this one:

Is there any difference in hardware / software between the Pumpkin JY-C0345 (link, similar to the C0344 but with 7" screen and physical buttons) and the JOYOUS J-8813 (link) ?

Specs-wise they look the same, from the outside they are 100% identical ... I'm just wondering if there's any difference between them that I'm unaware of? sound quality, chipset? Does it support any custom rooted ROMs?

Thanks
[MTCB Android Head Units Q&A] typos1:
That doesnt mean it doesnt have one, most modern cars do have an antenna booster that receives power from the factory head unit.

Most aftermarket head units, including these, do not inject power into the antenna line like factory headunits do, so the booster is there (usually at the base of the antenna) but does not work because it has no power.

Check the base of your antenna and see if there is a power line, if there is you need an antenna power injector, there are very cheap.

---------- Post added at 12:52 PM ---------- Previous post was at 12:51 PM ----------

No difference they are both Joyous units.
[MTCB Android Head Units Q&A] Enc0der:
Great, thanks.

What about custom rooted ROMs with these units? Any available?
[MTCB Android Head Units Q&A] theblackarrow:
Anyone can help please?
[MTCB Android Head Units Q&A] CARRisma:
So, is there a difference between an antenna booster and antenna power injector? Are they the same or are they two separate things? I see a variety of boosters on eBay, are there any specific ones which you recommend?
[MTCB Android Head Units Q&A] typos1:
Read the first page, all the info is there, all units can use the same Android firmware.

---------- Post added at 05:46 PM ---------- Previous post was at 05:44 PM ----------

Try updating the youtube app ?

Ground loop isolator should stop any noise..

---------- Post added at 05:51 PM ---------- Previous post was at 05:46 PM ----------

Yes there is a difference, the injector adds power to the antenna line to power the booster in the antenna, whereas a booster will have its own power supply. A lot of people selling "boosters" are actually selling power injectors but describe them incorrectly as "boosters" or "amplifiers".

Example:

http://www.ebay.co.uk/itm/Car-Aeria...643?pt=LH_DefaultDomain_3&hash=item25958bcb23

This is a power injector being sold as a booster. This will only work if you have a booster in your antenna already (you can tell by removing it and seeing if it has a power wire on it).

Actual boosters are normally little boxes, a bit like the one posted yesterday by the person I was replying to in the quote of mine you posted.
[MTCB Android Head Units Q&A] peti007:
Can somebody link a real booster, not a power injector? I think the real booster have to has +12V and GND wires, but I don't find any. In my Mazda 3 there is no booster.
[MTCB Android Head Units Q&A] typos1:
Basically anything that doesnt resmeble the cylinder shaped power injector I posted should be an actual booster.
[MTCB Android Head Units Q&A] Malaysk:
Fixed parking sensors at a density of screen 180 dpi, download and copy the replacement to the folder System / Priv-app. Only for firmware 800X480 http://xdaforums.com/showpost.php?p=58249825&postcount=7614
[MTCB Android Head Units Q&A] typos1:
It just contains a filter and something to inject some power into the line. I read stuff about it on the internet too and someone posted it on here months and months ago, I didnt believe them at first, but it does make sense, especially as there was a power lead on my antenna that I d often wondered about. There is also some stuff on the internet about how these "boosters" are a con and dont work cos they didnt contain any components that could boost the signal, a whole website devoted to it by some bloke who rants and rants on about it being a Chinese con. After fitting one I got a better signal and less interference and with that power lead on my antenna I decided that it was deffo a power injector. They maybe made in China but there are plenty of US and European companies selling them, most call them boosters, its not a con, its more ignorance on the behalf of the sellers.

With no antenna at all, even with a proper booster I dont think yourll get a good signal, although I guess youre gonna say that you do ! lol
[MTCB Android Head Units Q&A] peti007:
I don't think that is true. My car has no factory antenna amplifier, so if I buy a non cylinder shaped booster what has just one +12V wire where will be the GND? How will the electric circuit close?

I find one what could be good, but don't know where to buy. It has +12V and GND wires.

Pana-Pacific AM/FM Radio Antenna Amplifier - PP602956
[MTCB Android Head Units Q&A] zorantoma:
Has anyone managed to sync their contacts with this image? When i try the bluetooth disconects and reconects,but it doesnt download the contacts.
[MTCB Android Head Units Q&A] lmattiso:
I had the same issue, upgraded from 2.21 to 2.40 and now the Red and Blue values are switched. If you slide the Red slider up, you get blue lighting and if you slide the Blue up, you get red. Green seems correct. Not a deal breaker, I just use different slider combo now to get the lighting I want.
[MTCB Android Head Units Q&A] zorantoma:
This problem came up in this last 2 builds. I can make calls,true contacts work and sync. Mtc bluetooth exists. It just cant download the phonebook for caller id. Il make a video. https://youtu.be/XYobiaW1vA0
[MTCB Android Head Units Q&A] theblackarrow:
Can you please help me and till me which isolator to buy and how to connect it to the head unit properly as i don't want to miss it up :D
[MTCB Android Head Units Q&A] typos1:
what isnt true ? Most power injector are cylindrical, if it isnt its likely to be a proper booster, youre probably right about it having earth as well.

The link you posted likes like an actual booster. Have you double checked the end of your antenna ?

---------- Post added at 09:03 PM ---------- Previous post was at 09:02 PM ----------

Clearly just a bug, I d just live with it til the next MCU version when theyll most likely fix it.

---------- Post added at 09:06 PM ---------- Previous post was at 09:03 PM ----------

Dunno, never needed one, if it was me I d buy the cheapest I could find and follow the fitting instructions enclosed, probably just need to add it to the earth.

---------- Post added at 09:09 PM ---------- Previous post was at 09:06 PM ----------

Yeah, thats the guy, I ve emailed him and told him its no scam, that its a power injector for factory antenna boosters, but he wont listen.
[MTCB Android Head Units Q&A] clearchris:
If it has a screw for mounting, thats the ground. In automotive applications any metal chassis point is ground.
[MTCB Android Head Units Q&A] typos1:
Yes, like I said, its down to the ignorance of the sellers and the fact that it IS associated with boosters, but not actually a booster, no scam, just ignorance.

What vehicle have you got ? Was there deffo no power wire on the aerial base ?
[MTCB Android Head Units Q&A] typos1:
Ta !

Great, look forward to using it when I finally get my unit !

Ah, yes, the back is different, most of the apps look the same as the HuiFei but the homescreen looks like the WD8801, my guess is that it is a WD8801, ie dual core Telechips processor.

Great, you got the IR codes !

How did you get them ? From the MCU somewhere ?

I ve asked several suppilers why the units have an IR sensor but no IR remote.
[MTCB Android Head Units Q&A] 1-2-Hak:
From MTCManager

I tried the remote from my old android head unit. Some of the keys worked but were mapped wrong.
[MTCB Android Head Units Q&A] typos1:
Great, nice work !
[MTCB Android Head Units Q&A] lucky-jon:
Video Out - what standard?

This thread just gets better and better!

I seem to recall way back that a member had trouble getting an external monitor to work with his unit. I have tried connecting a few monitors to Video Out 1 (I think there is only 1!) and I get pictures with either distorted or no color. The monitors are from different manufacturers and should all auto switch between NTSC and PAL. I have tried both formats of DVD, and on the head unit they display fine using the stock DVD player app.

I don't really know about all the video formats, but I have seen exactly this effect when video standard is set incorrectly. I would expect the head unit player to convert all video to the same format rather than somehow trying to adopt the source material format.

Any comments / info? Any one successfully connected an external monitor?

Thanks.
[MTCB Android Head Units Q&A] gy_ro:
@ Dark Alex

If I turn the acc key and the system boots I get the message that GALA stopped. I guess this is always the case if GPS isn't active or GALA starts before something where it depends upon. I must admit I didn't upgrade to V1.77 yet, my system is still MCU v1.72 I could not test it's full functionality either because my unit is still on the bench.

Ronny.
[MTCB Android Head Units Q&A] kvantum:
Thanks

The UI and the back were the things that threw me off, even though UI is not that dissimilar.

I'm not sure how this Chinese manufacturing works, but I'm guessing it's possible that another manufacturer took the same guts and designed a shell around it. The specs do match pretty closely.

I tried comparing it with WD8801 or AN-21, but there are even more differences with those.

Either way, I just ordered it - the only way to know for sure.

I'll report back with the findings
[MTCB Android Head Units Q&A] kwalsh24:
Does this system have any hidden menus? I'm wondering if my power down / sleep issue on accessory is a setting configured in a hidden menu or something. So far the seller doesn't have an answer for me, he just told me to disconnect a wire I had already disconnected lol
[MTCB Android Head Units Q&A] booroondook:
Yes, it has many hidden menus. You can install "More Shortrcuts" app from Google Play (or another similar app) and create shortcuts for hidden menus on your desktop.
[MTCB Android Head Units Q&A] kwalsh24:
Hmm okay thanks, ill give that a shot and see if its a hidden setting thats causing my issue with my radio paired with my VW. If i find an answer ill let all know.

Think I also need to extend my wireless wire as its not the strongest
[MTCB Android Head Units Q&A] cat2115:
I have not install yet. Do at your risk,

Sell AliExpress sent me mcu.img and update.img that say to fix the delay in Amp shut off. He said this update will shut-off the Amp instantly once car engine is off and no pop sound.

https://www.dropbox.com/s/fwpqkwksqtczbl6/Kseries android upgrade 140616.zip

Anyone know what is "Switch" and "Mix" then there's a number range from 1 to 10 i guess, This is in Setting-->GPS

I have Sygic, the gps volume is good but Music doesn't mute smoothly when gps talk instead it make this scratch sound. Also is there another volume setting just for gps? So when music play loud i can adjust gps to volume to up/down?
[MTCB Android Head Units Q&A] dark alex:
I was able to test it today morning. I am currently diving into this issue. Just open the app and click "Manually start service" - but it does not ork unfortunately as I seem to access the wrong stream.

But I am not able to debug this until tonight. I got a second "blind release" without testing. I attached this below. Note: as it is not an official release I will not update my previous post but I will as soon as it is tested!!!

exactly! Basicly it just listens for boot completed broadcast and then broadcasts the intent.

Nothing more. Feel free to verify ;)
[MTCB Android Head Units Q&A] kwalsh24:
who's the seller if you don't mind me asking ?
[MTCB Android Head Units Q&A] cat2115:
Rocky Yu

http://www.aliexpress.com/item/Capa...Stereo-DVD-Video-Audio-Player/1517447202.html
[MTCB Android Head Units Q&A] kwalsh24:
Thanks, ill research their unit and see
[MTCB Android Head Units Q&A] typos1:
Its NOT the only way to know for sure - you could have just asked them to install a device analzer app and post a screenshot of it, so you can see what the specs are !

Jesus, if I ordered every unit I wanted to see the specs of, I d have, like HUNDREDS of Android headunits and a huge credit card bill by now !! :eek:

Should work on the AN21-U shouldnt it ?

Maybe theyll appreciate your app over on that thread as well ?
[MTCB Android Head Units Q&A] kvantum:
The specs are known

Processor, RAM, chipset, flash, screen res are all the same
[MTCB Android Head Units Q&A] typos1:
Oh, I see.

I d guess its modded HuiFei then.

You could easily use the homescreen apk from another unit on any unit and its not that hard to have a slightly different back, or maybe it will be the same back when it comes ?

One way to find out than, like you said :)
[MTCB Android Head Units Q&A] kvantum:
That's pretty much what I'm hoping for

Not anything I've heard of though, so far it's either a HuiFei or not

Either way, now we wait...
[MTCB Android Head Units Q&A] J0sh_FG:
Well, allow me to throw some light about this unit.

A member from spanish forum "BMWfaq" came to the Huifei Thread to ask us about this radio and I did some research.

w w w.ebay.es/itm/7-Pure-Android-4-2-Car-DVD-Player-3G-WIFI-IPOD-GPS-For-BMW-E46-M3-318-Camera-/181383651476?

Specs:​

Althought both units use the same Rockchip plataform, same Ram, same screen display , in a first exterior look, we see the unit has a different front fascia and the back pannel isn't the same from the original e46 Huifei neither.

But, if we check the specs we will notice:

* This unit uses a SIRF III GPS module instead of the U-Blox

G6010 ST.

* ST TDA7706 Radio Receiver instead of the Philips 6624.

* The "TOSHIBA" 7384 amplifier 4x50w doesn't even exist. TDA7384 amplifiers are made by the same manufacturer that produces their Radio receivers: STMicroelectronics . That's not all, looking at the datasheets, we will discover that there's no 4x50W amplifier neither. Their power goes from 4x25w to 4x42w :

Source: w w w.datasheetarchive.com/TDA7384-datasheet.html​

After letting my european Huifei distributor know about this unit, he told me that wasn't the first time ppl asked him about them.

The brand name is KLYDE and the specific e46 model is this:

h t t p://szklyde.en.alibaba.com/product/1898373721-218783324/Pure_Android_4_2_Touch_Screen_Car_DVD_for_E46_M3.html

​

Seems like a HuiFei clone. We now know they're different but, will these hardware dissimilarities be enough to determinate if the software of this unit is compatible with the HuiFei one? Will these units be able to use the changes you are working on in this forum?

Thanks in advance

Cheers

PS: sorry 4 my english
[MTCB Android Head Units Q&A] cat2115:
My unit does not have iPod icon. Could someone please provide me iPod apk from system\app. Hopefully with that apk I can access my iPod 30-pin usb cable

Thanks,
[MTCB Android Head Units Q&A] typos1:
I ve never heard of an antenna having to be "tuned" to a headunit, an antenna is an antenna, people used to use a wire coat hanger and this still works. If antennas had to be "tuned" to a headunit then the glass mount one would not work either ! These are ok, but the reception will not be as good as an external antenna, external antennas always give the best reception.

Why dont you try an actual booster with your previous antenna, or get an OEM antenna with integral booster form a scrap/breakers yard (one from any car will do) and use the power injector you have ?

And just to be clear, the power injectors DO work and are NOT a scam, they just ONLY work if you have a factory boosted antenna.
[MTCB Android Head Units Q&A] valerio.tosti:
Hello guys i have received the radio today. There is one big thing that bothers me because there is no possibility to change the bass of my subwoofer only. Is there an app whi can di that?
[MTCB Android Head Units Q&A] typos1:
Ah, ok how do you mean "fit" ? "Fit" into the space behind the radio ?

---------- Post added at 10:33 PM ---------- Previous post was at 10:31 PM ----------

Not exactly, these units, as you have noticed do not allow adjustment of the sub out channel.

A way round it is to install Viper4Android, this will give you lots and lots of setting to play with, including some where bass can be adjusted, but you must be rooted for it to work.
[MTCB Android Head Units Q&A] valerio.tosti:
Hello all i installed the huafei unit today but i noticed that i cant change the bass of my subwoofer only. It changes the bass off all speakers an that is stupid. I had an android car radio from icartech and there was an option for that. Is there a fix for this?
[MTCB Android Head Units Q&A] typos1:
Yes, read my post above.
[MTCB Android Head Units Q&A] typos1:
The guy who wrote that article is an idiot, he has been told multiple times by myself and many others that the devices he is calling a scam, are not in fact scams at all, but a mis-understanding/mis-wording due to ignorance. They are power injectors for OEM antenna boosters as we ve discussed, yet he chooses to completely ignore this and even claims that they will not work for this purpose when they do and are well known to within the aftermarket car hifi world, he also claims that the OEM boosters will not work wither, when they also clearly do.

Basically take absolutely no notice of him and his ill-informed xenophobic rants and get yourself an antenna booster !!
[MTCB Android Head Units Q&A] valerio.tosti:
Ok thabks what version of vipwr4android works?
[MTCB Android Head Units Q&A] zorantoma:
Could you also send me the bluetooth.apk from the 8.3.2015 image, becouse the mtcbluetooth didnt work.
[MTCB Android Head Units Q&A] grimpy:
Searching for the reset button. ..

Searching for the reset button. ..

I recently bought myself a MCU from JY but I cant seem to find the reset button

Product

http://www.dx.com/p/no-disc-android...-polo-2-passat-skoda-seat-373110#.VQfN-VmKq00

There are two tiny wholes next to both sd card slots but I think there microphones so I am afraid to stick a needle in them (it might perforate the mic if its indeed there).

When I put the update.img on my sd card and plug it in the map/gps slot nothing happens (just regular mount) So I want to boot it in recovery to change to ROM to be able to have root.

Any hints are welcome.
[MTCB Android Head Units Q&A] valerio.tosti:
I have a problem when i cahnge between radio music and dvd app my subwoofer makes a loud PLONK. on radio start it makes it too. Is there a solution?
[MTCB Android Head Units Q&A] Petrows:
Headunit service update 2.9

Glad to introduce new version of Headunit service! After a long time, finally, there is new version published. Should say many thanks to the [MENTION=6041319]dsa8310[/MENTION] for his work. What is new.

1. Refactored Steering Wheel keys handling. [MENTION=6041319]dsa8310[/MENTION] sorted out the problems on service start. SWC Keys now are not duplicated and freezed on boot.

2. App is now using Android Studio for better support.

3. Call from Android now supports both new and old versions of Micronteck Bluetooth. Autodetect is: FW <= 12 dec 2014 = old version, FW > 12 dec 2014 = new version. If Caller does not working - check out the settings for manual protocol selection.

4. New Call History widget - now call history can be displayed as a list widget on Android desktop. Adress book is Android's, in future it will use BT phonebook too.

5. Bug fixes and other updates.

Application page onb Google Play
[MTCB Android Head Units Q&A] zorantoma:
The reset buton is in the right hole. You have to press it for 10sec or more to take efect. Which mcu version do you have?
[MTCB Android Head Units Q&A] manicuspanicus:
Big Thanks

I would like to take this opportunity to thank [MENTION=6041319]dsa8310[/MENTION] for all the help he provided to a stranger like me in solving all my problems with all the programs i wanted to use. A big thanks also to all the people in here for sharing all their knowledge, programs and know how with the rest of us. Thanks to these people at last I have a fully functional system that works flawlessly like a system is supposed to.
[MTCB Android Head Units Q&A] typos1:
http://xdaforums.com/showthread.php?t=2191223

Also, do a thread search, there is info about using viper in this thread from a month or so ago

---------- Post added at 11:07 AM ---------- Previous post was at 11:06 AM ----------

Only one will be the mic, does it not say in the instructions which it is ?

---------- Post added at 11:16 AM ---------- Previous post was at 11:07 AM ----------

A scam is done deliberately mislead people, you have not been deliberately mislead, you have been mislead due to ignorance, I can understand your frustration, you should open a dispute, the item is not as described, you should also inform the seller to change the listing to say "power injector for OEM antenna boosters" to prevent it happening to others.

The guy who wrote the article has been told the actual situation by several people, but he ignores it and continues to say it is a scam and even denies that it will work as a power injector, rather than correct his and the sellers mistakes and explain the truth behind the matter on his website.

Not that I wanted to get into more discussions about that, I m trying to point out that he does not know what he is talking about on many levels so ignore everything that he has written and try an antenna booster, now you know what they are you can avoid power injectors and find a proper booster, dont let that guy's rants put you off buying a booster, which is what you need. Try and read stuff about antennas/boosters on Wikipedia, its much more trustworthy than that guy. I know that boosters amplify on a db gain basis. I have used boosters for different antennas many times in the past and theyve always worked, its like what that guy wrote has scared you and now youre afraid to simply buy a product that loads of people use the world over, if the signal from your antenna is not strong enough, you just need to get a booster !
[MTCB Android Head Units Q&A] typos1:
Ah, sorry, I thought you d read it on his site and you had been put off buying a proper booster.

I know he is not entirely wrong, but he has been told what the item is and will not take any notice, or change his site to reflect the truth.

No one is deliberately selling these power injectors as boosters, they are doing so due to ignorance (and its not hard to see how it can happen because the devices are essential in order to get the OEM booster to work, so many people will fit them and find that their signal improves confirming in their minds that they are "boosters"). The devices cost peanuts, they are so cheap it is ridiculous, why would anyone bother to put so much effort to rip someone off for what would amount to less than a dollar after all fees have been taken off ? The effort put in for the returns simply do not make it worthwhile. BTW if you can be bothered to look, you will also find people selling them with the correct description of what they do.

There are 1,000s of car hifi retailers the world over selling these, clearly this is not car hifi retailers joining together internationally to scam people out of less than a dollar, its just ignorance. Do your bit to help correct it by opening a dispute :)