yashsingh1/xdaforums huggingface dataset:
[MTCB Android Head Units Q&A] typos1:
Didnt we have this some weeks ago about how to get into recovery with Astra/Cruze units ?

I thought we sorted it out then, when someone with a Cruze told you how to do it on those cars (a bit different from other units if I remember rightly).

As I dont have one I cant remember I m afraid.

Use thread search ? (Then write it down and remember it !!).

It doesnt matter in recovery you can install from SD or USB.
[MTCB Android Head Units Q&A] Siffion:
Yes the same way as normal to the root of the GPS card
[MTCB Android Head Units Q&A] giornistrani:
I just want to know where to upload the image to install the ROM in recovery mode: SD or USB? Thanks

---------- Post added at 09:08 PM ---------- Previous post was at 09:05 PM ----------

Sorry I didn't see the last phrase. I'll try and let you know.Thanks
[MTCB Android Head Units Q&A] matekhr:
Astra J & recovery mode

[MENTION=6627162]RonvH[/MENTION]
[MENTION=6516720]giornistrani[/MENTION]

I think both of you have the problem how to enter a recovery mode on Astra J.

Just a hint for other forum members: many GM vehicles (Opel/Vauxhall, Chevrolet, Buick, GMC...) have "buttonless" headunits. All the control buttons are at the separate plate, and HU must be booted properly in order to use buttons (as well as SWC).

I know a solution if you have a KLD unit, but some soldering skill is required.

You have to put a push switch between two marked points on the attached photo. This is your new power switch. :)

In fact, if you want to do it just once, just solder a wire on the capacitor C84, and touch the GND on the HU. (the other marked point is GND actually). But it is very advisable to put your new switch somewhere in the glove compartment, for future use.
[MTCB Android Head Units Q&A] xrapidx:
My unit was just delivered.

Quick question regarding the installation - is it really as simple as plug and play? I have bought the ISO converter for my vehicle - would I only need to plug my vehicle wires into ISO connector, and ISO connector to unit, and attach the antenna, and GPS antenna, and extended USB cable?

With regards to the GPS antenna - where is the best place to place it?
[MTCB Android Head Units Q&A] blankers:
Mine was totally plug and play....yes.

I left my gps antenna under the dashboard a few inches from the radio, and it works fine.
[MTCB Android Head Units Q&A] xrapidx:
Great - thanks - I asked because besides the plug the unit came with, there were a few loose wires as well, e.g. reverse...
[MTCB Android Head Units Q&A] getehem:
Let me give you some information, I don't know everything, but I am in this business since 2007 and I get contacts with quite all factories ...

For android 4.2.2 :

Huifei is a factory, KGL is their commercial branch

AN-U21 or so, this is from TONGHAI CREATE factory

SHENZHEN KLYDE has as well a range of android 4.2 units

Other source are SION ( for 1024 x 800 units that you can see in this forum), and NewsMy ( units combining WIN CE + ANDROID 4.2)

As far as I know, all others are trading companies like Sharing Digital and so on....)
[MTCB Android Head Units Q&A] :
Can someone please post a picture of the product listed in the OP and can someone send me a link to a reliable seller of the unit? There are so many variations on the net I'm having trouble pinpointing the correct unit.
[MTCB Android Head Units Q&A] typos1:
Indeed, so for instance Sharing Digital units ARE modified HuiFei units then despite some disparities.

There are literally hundreds of factories/suppliers.

HuiFei/KGL also make WinCE units, other companies, apart from NewsMy also sell dual OS units - Erisin for instance.

Its all a bit confusing for everyone, but changing a launcher, for instance, does not mean the unit suddenly does not become a HuiFei one.

Similarly speccing a different GPS chip doesnt either - maybe HuiFei/KGL supply units with differnent GPS chips aswell.

Changing the MCU software could also be done by re-sellers - they may buy them and add their own software or maybe they buy them supplied with different software because thats what they want and HuiFei/KGL supplied it.

And on top of that a lot of the "re-sellers" on alibaba and dhgate claim also to be manufacturers, no one really knows who is or isnt - anyone fancy a trip to china ?

There are also many different suppliers and variants of the AN21-U.
[MTCB Android Head Units Q&A] as_estsn:
Connecting to can bus

Thanks! And thanks for the reply. The ASCII codes that appear are consistent, but unreadable. Each button press causes a set of characters to appear, but they frequently contain the characters "�▒". On my computer those appear in my browser the same as they do in the command line - the question mark in a diamond, and ASCII character 177. These would seem to indicate that I'm getting corrupted or improperly encoded ASCII strings, but so far I have made no progress determining what I'm doing wrong. I see them when using "cat /dev/ttyV2", but don't see them when using minicom. When using minicom I see the exact same sets of characters except that the special characters are missing. They are not replaced with other readable characters, they just disappear in minicom.

Very frustrating. I feel like as soon as I figure out this one thing I'll be able to make huge amounts of progress very quickly, but at the moment I'm essentially stuck at the starting line unable to even begin because I just can't figure out how to talk to this thing.

:(
[MTCB Android Head Units Q&A] xrapidx:
Do you need to separately ground this unit, or is it grounded through the adapter
[MTCB Android Head Units Q&A] as_estsn:
The ones I have seen all have a main ground in their wiring harness (seems to always be a solid black wire) that goes to chassis ground through the car's normal audio system wiring harness. The mounting bracket in my car is plastic (bmw x5) so there is no possibility of the HU case being grounded by the bracket and it works fine.

If you have the can bus decoder then you will also have a second chassis ground wire and possibly a signal ground as well going to and coming out of the decoder.
[MTCB Android Head Units Q&A] promox:
Get Into Recovery

1 Press reset button and power button together

2 After about 5 secs release reset button, but keep pressing power button

3 When booting screen appears release power button.

4 It boots into recovery.

I dont make with this method :(

My device does not recovery mode.

What musr i do.

My device stay logo scrolling for hours.

SM-N900 cihazımdan Tapatalk kullanılarak gönderildi
[MTCB Android Head Units Q&A] xrapidx:
Need a bit of help here, installation is complete. But I only get sound from GPS, and for example, if I get an email?

Radio/mp3s don't output sound?
[MTCB Android Head Units Q&A] cat2115:
Please see picture.

Would anyone know what is AWS button use for? When I press, nothing happened. Also, is there anyway to re-assign those button? For Example, I have "Loud" button on the right side, can I re-assign so when press Loud button, it go to HomeScreen? Thanks
[MTCB Android Head Units Q&A] xrapidx:
Bad file with mp3.

Radio still not working, no sound, and it doesn't find any stations?
[MTCB Android Head Units Q&A] R4D3N:
Did you connect the radio antenna in the back of the unit?

That button is AMS, not AWS. AMS = Automatic Music Search and if you press that button when you are on Radio it automatically searches for all radio stations.

Regarding the question about reassigning the LOUD button, I don't think that is possible.
[MTCB Android Head Units Q&A] agentdr8:
If the Loud button passes a keycode event to Android when pressed, it can be displayed using an app such as KeyEvent Display and then you could modify the keylayout file to adjust/reassign accordingly.
[MTCB Android Head Units Q&A] pakidermo5000:
Hi,

interesting discussion. When I started the thready there was only HuiFei. I called it HuiFei because there was nothing else and because the Unit I bought was called this way. I talked to Keylo and they told me they were the manufacturers. There was only another seller besides KGL, GreenPoint. Webdude and others bought from GreenPoint. It turned out they modified/inspected the units and broke the clips that made the unit fail for webdude.

So, if you ask me I want the original one, not just a modified version (which could or could not be better). However, I doubt it will be better because the resellers just want to make money, so I guess they will install cheaper components.

HuiFei/KIGL is not interested in selling to individuals, they just want to sell large quantities. I think they now just sell to resellers.

I don't think calling it RK3066 is a good option. It is ok for Android, as it will all be the same (all resellers have RK3066), but I the MCU might be different. The MCU apps might be different if the components are different. So, I am not sure whether the HuiFei MCU apps will be compatible with non-HuiFei units.

If you can confirm that all RK3066 units' firmware and MCU are compatible between them, I have no problem on modifying the name of the thread.

PS: I think you should not base your decision on whether the output is 4x41, or 4x45, or 4x50 W. I have seen resellers declare WinCE units as pure android...

my 2cts.
[MTCB Android Head Units Q&A] kwalsh24:
awesome app dark Alex, question think its possible to implement a feature that on boot that the app sets the volume to a low setting that the user can adjust? say I leave my car and its at 20, come turn the radio back on and its set to 15 or so by the app. my old VW radio had that option that on start it would auto lower the volume. Be nice if that could come back.

Id gladly donate to the cause on the playstore if so!
[MTCB Android Head Units Q&A] xrapidx:
HuiFei - 2 DIN Pure Android 4.2.2 A9 Dual Core Car Stereo Radio Head Unit

Another issue, when I add a google account, it doesn't show under accounts? And when I try view my calendar, it shows no details, then when I try add the account, it already exists, anyone experience this?
[MTCB Android Head Units Q&A] giornistrani:
Then the options in the 1st page doesn''t work for Opel Astra j?
[MTCB Android Head Units Q&A] Graves33:
new here read most of this thread and cant wait to get mine. I order a quad core r3188 and hoping i dont have the audio issues that the other guy had. Anyway just saying hey for now. :)
[MTCB Android Head Units Q&A] giornistrani:
Don't worry Graver33, I'm always unlucky ... I'm used to. To you will be fine:)
[MTCB Android Head Units Q&A] typos1:
I m sure someone posted a solution, like hold down the volume+or something, it didnt involve soldering. Take it theres no pin hole reset button then ?

---------- Post added at 08:27 PM ---------- Previous post was at 08:26 PM ----------

You know that because you asked how to get into recovery !!
[MTCB Android Head Units Q&A] Graves33:
I sometimes have that luck myself lol. Mine should be here tomorrow. i got a rear camera with mine next up is obd adapter.
[MTCB Android Head Units Q&A] matekhr:
Correct.

But if you can find a better way to enter a recovery mode, please share it.

Until then, use this method:

1. press and hold reset

2. touch the GND with a wire and hold - you will hear 3 beeps

3. release reset

4. release GND

Wait for a few seconds and you are in recovery mode.

(Short press moves between the choices, long press chooses the highlihgted choice)

I tested this method on my Chevy Cruze.
[MTCB Android Head Units Q&A] Buffen:
Do you know this Unit

Hi Gents,

I stumbled over this unit, it actually look right for me, its just a bit expensive - its €760,- plus shipping! :o

Do you know it?

I wonder if its a labelled "Chinese" product? - that I could source from the manufacturer or a reseller i China?

Cheers

Steen
[MTCB Android Head Units Q&A] giornistrani:
Which MCU uses? You can send me the factory settings?
[MTCB Android Head Units Q&A] supremekizzle:
Where'd you get the quad core? Been looking everywhere and can't find them.
[MTCB Android Head Units Q&A] matekhr:
RK3066

MCU 2.49

What part of factory settings do you need?
[MTCB Android Head Units Q&A] typos1:
Of course its Chinese virtually ALL electronic products are, even if they have a western brand on them !

I ve seen that unit around and its not related to the units in this thread, plus its ridiculously overpriced.

---------- Post added at 08:48 PM ---------- Previous post was at 08:47 PM ----------

You cant send factory settings ! They are controlled by the MCU and you already have the latest. The MCU is the same regardless of your car.
[MTCB Android Head Units Q&A] giornistrani:
I'd like to know which version of MCU you use. I'd like to know the option "audio" and "other". Thanks
[MTCB Android Head Units Q&A] typos1:
Search the thread and you will find links, plus google it and they also come up, look at KGL's Alibaba sites, look on Alibaba generally, loads of them around.
[MTCB Android Head Units Q&A] Krisjan89:
hvilken biler det du vil have den til? den du har fundet er sindsyg dyr.... enhederne i denne tråd plejer sjældent at koste mere end 3200kr sendt til danmark

mvh

kristian
[MTCB Android Head Units Q&A] matekhr:
My car is 45 minutes from me right now.

PM me tommorrow to remind me, I'll take the photos and send you.

It's 2.49 MCU.
[MTCB Android Head Units Q&A] giornistrani:
your ROM does not work!

---------- Post added at 10:05 PM ---------- Previous post was at 10:05 PM ----------

kld?
[MTCB Android Head Units Q&A] matekhr:
Unfortunatelly, I don't know.

I found this in general unit description:

◆CPU: RK3066 1.6GHz Cortex A9 dual-core

◆RAM：DDR3 1GB

◆Flash：8GB

◆Power AMP IC: TDA7388

◆Audio Processing:BD37534FV

◆Video Processing:ADV7181D

◆AM/FM Decoder: TDA6624(RDS)

◆Main Power Supply:M2303

◆SCM: IAP 15L2K61S2

◆DVD: DL-30/Hitachi 1200XH（SPHE8202VGQ Decoder）

◆Bluetooth Module:BC6 Stereo Module,A2DP

◆Analog TV: QSD-MT-S77（optional）

◆Digital TV: DVB-T、CMMB、ISDB、ATSC（with external Special TV Box）（optional）

◆GPS Receiver Module：U-BLXO G6010

◆WIFI Module：RTL8188/ IEEE802.11B/g/n

◆Touch Screen：Capacitive Touch Screen with high hardness and scratch-resistance

◆LCD Pixels：800*480

◆Power Output:4x45W

What is SCM?

I don't think it's anything flashed into it.
[MTCB Android Head Units Q&A] giornistrani:
where can i find MCU v2.49?
[MTCB Android Head Units Q&A] Graves33:
Auto pumpkin.com. its the only one they have. Customer support is pretty good. My altima has 2 ohm speakers and they told me the unit was 2 ohm stable. I was really worried about that and asked them numerous times lol.

autopumpkin.com/new-products/pumpkin-quad-core-android-4-4-kitkat-car-stereo-double-din-6-2-inch-in-dash-gps-navigation-system-support-3g-wifi-odb2-dvr-air-play-7-color-button-indicator
[MTCB Android Head Units Q&A] matekhr:
A few pages back. But make sure your unit is KLD.

But why does it bother you?

Your problem has nothing with MCU
[MTCB Android Head Units Q&A] matekhr:
It does work, I use it - updateKLD800x480KK4.4.4_20150416 prerooted
[MTCB Android Head Units Q&A] matekhr:
Didn't notice he has 1024x600 unit, sorry.
[MTCB Android Head Units Q&A] madjeff:
Finally got my PAC setup and working correctly. Once I set it to Pioneer the head unit was able to read the inputs correctly. Now on to my last issue.

I picked up a wireless transmitter kit for my backup camera and have the back transmitter wired to my backup lights. It's powering up correctly when I switch to reverse gear and the backup lights power on. I have the front transmitter wired to my switched accessory and ground, and have the RCA video plugged in to the unit. It is also powered on and seems to be working.

However, when I switch to reverse the head unit is not switching over to the cam. I assumed (incorrectly) that when the HU detected a signal from the RCA video it would switch, but that doesn't seem to be the case.

I have NOT used the wire labeled BACK at this point, but obviously I need to wire that after all. The question I have (and could not find in a thread search), does the HU use that wire to switch to the backup cam (power supplied, input switches to cam)? Or does it just need power to that wire continuously, and then switches when a video signal is detected on the RCA plug?

I'm trying to save having to tear apart my center console to get to the reverse switch wire, but I may have to do that. I just wanted to get some clarification on how that backup wire works before tackling that job.
[MTCB Android Head Units Q&A] typos1:
Wow, I didnt know you spoke Chinese DSA !!

---------- Post added at 12:18 AM ---------- Previous post was at 12:16 AM ----------

I take it your Altima has Bose or an OEM amp ?
[MTCB Android Head Units Q&A] Graves33:
Nope no Bose or amp. All 2006 altimas came with clarion speakers at 2 ohms. i thought it may have been amped but i double checked with Crutchfield.
[MTCB Android Head Units Q&A] typos1:
Ah ok, I wont say what I was gonna say as it probably wont apply !
[MTCB Android Head Units Q&A] Graves33:
Let me guess only 2 ohm stable because of preamps lol
[MTCB Android Head Units Q&A] giornistrani:
Unfortunately my car stereo is ruined, I was in the car three hours but I have resolved nothing
[MTCB Android Head Units Q&A] RonvH:
[MENTION=6516720]giornistrani[/MENTION]

Soldering no problem.

My Radio is a KGL.

Hope that is the same layout.

Thanks..

Ron
[MTCB Android Head Units Q&A] giornistrani:
I do not practice with the welds. I had problems with the car radio, I was told to install a ROM, and instead of solving problems, they were created more !! Now what? I throw it away?

---------- Post added at 02:13 AM ---------- Previous post was at 02:11 AM ----------

I need a person's practice of radio Android. There is someone in the forum to which to send the radio? I do not understand much of radio
[MTCB Android Head Units Q&A] typos1:
No, I was just gonna say that a lot of OEM amp setups use low level outs on the speaker wires so youd need either an RCA to speaker wire adapter to sit between the RCAs on your HU and your amp or a box that un-amplifies the speaker outputs from the HU and then sends the signal to the OEM amp, which would probably not have any gain adjustment and would therefore not be quite loud enough cos it would likely need at least 4V RCA outs from the HU and these are only 3V.

But as you ahent I wont.

2ohm speakers have less resistance than 4ohms so your ll probably find you have the opposite situation and that your HU is louder than your OEM one.

---------- Post added at 01:28 AM ---------- Previous post was at 01:26 AM ----------

Did you get into recovery ?
[MTCB Android Head Units Q&A] giornistrani:
Before installing your ROM I had "KLD4.4.4_1024x600 prerooted light" with MCU v2.47 and was fine.

The problems I had were others: language info display in English, interference with music via USB / SD and stop. But now I have another bigger ... the radio does not work !!!

---------- Post added at 02:52 AM ---------- Previous post was at 02:46 AM ----------

Tomorrow morning I remount the radio again original Opel Astra, CD400.

Now I need a technician for Android car radio because I do not know what to do.

Here in the forum, is there no one to send the radio?
[MTCB Android Head Units Q&A] typos1:
Calm down people are trying to help, its not as bad as you think, you dont need a technician.

The language problem cannot be solved unless you modify the MTC CAN Bus app or email the manufacturer and ask them to change it (something you dont seem to want to do), i have told you this several times.

I cannot help with the SD card music problem, hopefully someone else can.

DSA is going through your posts to try and help, it looks like you should be able to sort it out with new firmware, did you get into recovery, can you still get into it ? Please answer.

---------- Post added at 02:03 AM ---------- Previous post was at 02:01 AM ----------

The MCU is not the problem, he just wanted to update it to 2.49, as you know its irrelevant to his problem.
[MTCB Android Head Units Q&A] giornistrani:
I've tried to put it on SD gps and USB but nothing happens, always screen "error"

---------- Post added at 03:08 AM ---------- Previous post was at 03:03 AM ----------

No typos, I was not able to enter the "recovery". I tried the options in the first page and nothing happens. With the welds I'm not practical, I do not know how do the welds, so I need the technician
[MTCB Android Head Units Q&A] typos1:
There is a way without soldering, its been mentioned before weeks ago and earlier today. You need to cos then you should be able to recover it.
[MTCB Android Head Units Q&A] giornistrani:
Can you show me where the post is described the solution? please
[MTCB Android Head Units Q&A] giornistrani:
how can I connect the radio to the PC?
[MTCB Android Head Units Q&A] giornistrani:
this is my unit
[MTCB Android Head Units Q&A] blacklistedcard:
Nice tape job....
[MTCB Android Head Units Q&A] pascaltd:
Hello,

I bought a 360 birdview park assist to plug in my Huifei. I have a little problem, I have a car radio 2 din brand Huifei with 2 video inputs "video in" and "cam in". So I connected to the input "cam in", everything works fine when I reverse gear but I remove the reverse image disappears malgrés programming 15 seconds or 30 seconds before seen. I tried connecting to "video in" but of course I have no image when I reverse gear. I also tried with the "touch pad" button. Here is their response:

1. The reverse BLUE wire in 360AVS is connecting to Reverse detect line of Car DVD.

2. the reverse RED on rear camera of 360AVS, is connecting to Reverse light of CAR.

3. the Yellow VIDEO OUT of 360AVS is connecting to CAMERA IN of Car DVD.

Could you help me. I do not know where to plug.
[MTCB Android Head Units Q&A] Buffen:
Hej Kristian,

Dansk??? - må man det i dette forum? :)

Jeg er ved at købe en Alfa 159, der har en gammel 2 DIN Pioneer monteret - den vil jeg gerne skifte ud med en Android - dims!

mvh

Steen

To moderator(s):

I replying in Danish - I do not know if its "allowed"?

---------- Post added at 09:15 AM ---------- Previous post was at 09:06 AM ----------

Hi typos1,

Yeah - I cant think of any electronic device that not comes from China!

Overpriced - yes, a bit, to but it mildly :D
[MTCB Android Head Units Q&A] lacrimosa2k2:
ga5151 second video out and others

hello all,

a question for ga5151 eonon radio,

knows anyone a sulution for splitting video out (in this case maps, sygic or others) to the second video output. i would use the main screen for music and the second screen for navigation.

and when the ignition is on and the radio is on, shut the radio down and boot again when starts the engine?

and last, when the radio start can i directly view the reverse camera or must i wait until the system starts up over?

(sorry for my bad english)
[MTCB Android Head Units Q&A] Krisjan89:
btw found this model specific unit to the alfa 159 on alibaba express. http://www.aliexpress.com/store/pro...-Spider-with-3G-Wifi/1339041_32323389143.html

i have an model specific unit myself, its alot less hassle, since it fits the car without facia adaptors and comes with a plug and play harness (judging from the pictures, the one i linked to, is a kgl unit)
[MTCB Android Head Units Q&A] Buffen:
Yes - I have found the same! And I like that it, more or less, should be be hassle-free :)

It comes as an Android 4.4.4 version - so Ill fork the $400,- plus freight AND properly Duty :(

Cheers
[MTCB Android Head Units Q&A] AdamCsiki:
BMW E46

Hello , please HELP!!!

I want update my android system 4.2.2. to 4.4.4. kitkat.

This is my car audio :

and my system and mcu etc:

MCU version: MTCB-KGL5-V2.01 (aug.18.2014)

Modell: S07

Android version: 4.2.2_0392014

Kernel version: 3.0.35+

Build : rk30sdk-eng4.2.2 03092014

The Question is ,wich latest version mcu.img and update.img compatibly my car audio or why Kitkar 4.4.4. official update compatibly KGL\KYD\KLD\ etc.....

Thank you very much if you answer me !:victory: