yashsingh1/xdaforums huggingface dataset:
[MTCB Android Head Units Q&A] KeiserSozeyFr:
Insert the card on GPS slot and run on recovery mode (see first page for process).

Run "update system/mcu image from sdcard".
[MTCB Android Head Units Q&A] netay:
Process to entery recovery in my device

After contacting support, I was told that for my device, entering recovery has a different procedure as follows:
[MTCB Android Head Units Q&A] xrapidx:
I've now tried a factory reset, and again setup everything.

Ok - I've now tried different antenna's - and tried various band configurations. Nothing picks up on AM or FM.

Anyone have an idea of where to start looking?

Also, if anyone has experienced the above?

---------- Post added at 10:57 AM ---------- Previous post was at 10:42 AM ----------

If possible, can the OP be updated with tested external microphones? (my internal is terrible)
[MTCB Android Head Units Q&A] xrapidx:
I now have three issues

1.) Radio as above

2.) Received a 3G dongle (Huawei E180) - plugging it in does nothing? Plug it into the PC and a green light flashes, and then nothing. Trying to find drivers just says it can't find the device.

3.) Received a OBDII bluetooth unit that I was told works with this device, but there is no option for pairing in settings, just in the Bluetooth phone?
[MTCB Android Head Units Q&A] kwalsh24:
Hmmm

1) radio - my radio was fussy with what style adapter I used with my VW antenna, used a power diversity adapter and got poor results, non powered worked when I had it connected to the roof antenna & not the window like my car has

3) I had to use the search option in one of rhthe menus (sorry, I can't recall the Bluetooth menu to direct you exactly where it is, it looks like magnifine glass icon on the right of the screen on my radio) for it to search for my Bluetooth obdII. Selected it, the selection turned red and it seemed to pair up fine, came up as OBDII on the list.
[MTCB Android Head Units Q&A] xrapidx:
Solved issue 3. Thank you kwalsh
[MTCB Android Head Units Q&A] dark alex:
I will have to check if I can seerve the unit a fixed value.

(SOrry still reading news :) So maybe there will some answers follow)
[MTCB Android Head Units Q&A] kwalsh24:
Hmm or even if you can have it minus volume levels at app start, just like it does when it modifies for speed values. then the user can adjust to see fit.
[MTCB Android Head Units Q&A] dark alex:
The Problem is currently I can only tell "Lower Volume" and "raise Volume" - nothing else. But I will check that.
[MTCB Android Head Units Q&A] xrapidx:
Thanks, I believe the antenna in this vehicles are not powered.
[MTCB Android Head Units Q&A] kwalsh24:
hmm okay, I'm not the expert haha. even if it can tell the sysystem to lower the volume X amount at boot that would even help.

---------- Post added at 01:01 PM ---------- Previous post was at 12:58 PM ----------

hmm, any adapters being used? or stock harness? I think I recall seeing tuner options in the factory menu, could try to change it and see if results change
[MTCB Android Head Units Q&A] xrapidx:
Nope, stock antenna input was the same as this unit.

You can change the band ranges in the factory menu... Tried that.
[MTCB Android Head Units Q&A] kwalsh24:
Hmmm almost sound like a faulty tuner, ill check my radio and see if there is a FM tuner module selector or not

Have you tried to manually tune? I know if I use the seek & scan on my radio it wont lock onto a station at times due to weak signal, I have to manually seek for the station i want. I also find this is greatly effected more with the category selection enabled, I have mine set to non. As the station I listen tto is a rock station but the radio has it listed as children, so if I have it set go rock, it bypasses the station.
[MTCB Android Head Units Q&A] xrapidx:
HuiFei - 2 DIN Pure Android 4.2.2 A9 Dual Core Car Stereo Radio Head Unit

Yeh. Tried manual, I get no sound. Not even static.

I see there is a radio selection in Factory settings TEF6606/TEF6624 (defaulted) and TDA7706. Tried both.

I've set all the tuning settings off, even tried mono.

Really hoping it's not a factory fault, sending it back is hell of an expensive from South Africa.
[MTCB Android Head Units Q&A] kwalsh24:
Hmm id highly say contact the seller, maybe they will send replacment parts , as it sounds like a fault.

There is another area to check in the hidden menu for volumes, I just recall what they list it as. Or if te radio is even listed.

Howwever, if it doesn't lock on a station at all and just cycles, my guess is a fault.
[MTCB Android Head Units Q&A] xrapidx:
HuiFei - 2 DIN Pure Android 4.2.2 A9 Dual Core Car Stereo Radio Head Unit

Yeh, checked the volumes. Do these radios play static when there's no signal, or does the software mute it when it can't find signal?

I've contacted the seller, waiting for feedback, because the 3G dongle is also dead.

I'm testing the unit in the hopes of ordering more...so want it working 100%

Also going to try and find a external antenna somewhere... This vehicle is new, so need to be careful with warranty.
[MTCB Android Head Units Q&A] kwalsh24:
Mine does slight static, which makes me think its a hardware issue, all you ccan try is locate a Din adapter, plug it in and see, even with no antenna attached the adapter will act as a weak antenna and should give you at least static or maybe a local station.

However, if your car uses a din plug, and its not powered at all by the stock radio, it should act the same as my test mentioned above.

---------- Post added at 01:53 PM ---------- Previous post was at 01:44 PM ----------

does anyone have this new radio app? I have tthe blue one but can't seem to find the new radio app. or is it only aable to be done via a firmware update ?

I'm running the same firmare/mcu as the first page lists but my radio app isn't saving station names, also need to update so the categories are more correct if possible
[MTCB Android Head Units Q&A] typos1:
This quote has, I think, shed some light on our earlier "debate":

It would appear that the board has settings for both the Philips AND the STMicroelectronics chips. (although an (admittedly very quick) google seems to suggest that actually whilst there are Phillips 6601 and 6601T chips, the 6606 and 6624 are actually made by NXP Semiconductors, NOT Phillips ! But thats another discussion :eek: )

That seems to support my theory that HuiFei/KGL or who ever designs and/or makes and/or sells these can supply either chip and therefore NOT having a one of them does not mean that the unit is NOT a HuiFei . . . discuss !
[MTCB Android Head Units Q&A] leszekpap:
Anybody? It's really not possible to have call using hands free Bluetooth connection because all people are saying that they can't hear me... I tried to connect external mic(because I have plug in my rsdio) but still the same...

attached photo of my GS unit and bluetooth card...on right side (5th) is C32...this one I should remove and from back of bluetooth card connect signal from external mic ? then gnd where?
[MTCB Android Head Units Q&A] giornistrani:
Hi guys, I'm finishing the translation of files sent byMalaysk.

After welding, the radio must be connected by car or I can get in recovery from home by connecting it to PC? Thanks
[MTCB Android Head Units Q&A] giornistrani:
I disassembled the car radio ... the pattern is different! Where I need to do the welding?
[MTCB Android Head Units Q&A] giornistrani:
The scheme to be different ... where do the welding?
[MTCB Android Head Units Q&A] iori01:
---------- Post added at 10:53 PM ---------- Previous post was at 10:52 PM ----------

[/COLOR]

Have you connected the orange wire ? Do you have CAN Bus ?[/QUOTE]

Hello,

Yes, Orange wire is connected.

My car is having CANBUS but I have purchase the adaptor to recover steering wheel control , illumination, etc...

Any idea ?
[MTCB Android Head Units Q&A] Marius B:
And i have can bus decoder . I buy this decoder for iluminate and power from can.

and work power but light no.

All time is on.

I talk with Nicole and tell me and all time is one.

Maybe guys from here can help us.
[MTCB Android Head Units Q&A] giornistrani:
Hello Malaysk. These are the two files translated into Italian. Thanks
[MTCB Android Head Units Q&A] Malaysk:
OK, I will try to do on Sunday. Now I'm going to Sunday.
[MTCB Android Head Units Q&A] giornistrani:
Thanks Malaysk
[MTCB Android Head Units Q&A] romulus55:
Nondroid Backup

Hi freinds,

is there any way to make nondroid backup. I use titanium backup but it is not nondroid backup ı want to try new roms if ı dont like it then ı will return my old room like nothing change

thank you.
[MTCB Android Head Units Q&A] typos1:
No visible pins unfortunately, at least not from the front, see picture below.

A "new ROM" ? DSA has made 2 rooted copies of the RK3188 ROM and they are in the thread and on the fileserver.

Some car headunits do have the lights on all the time, mine does from the factory, maybe you could put a switch between the orange wire and the headlamp switch so tey turn off with the ights if it bothers you that much ? Also search the thread this sort of thing has been mentioned before.
[MTCB Android Head Units Q&A] Marius B:
Typos1 , how can put a Switch if i dont connect any wire to light ? I connect only can bus +,- ground and plus permanent.
[MTCB Android Head Units Q&A] clearchris:
Yeah, thats bga for sure. Hynix is a pretty common brand though, thats nice, and two pads for chips is nice too.

Its interesting, Im not sure what the other chip is, but it looks like it can take either bga or an older type package, you can see pads on either side of the chip. If I had to guess, Id say its the internal SD chip. I cant make out the numbers on the chip so hard to say.

Thanks for the picture.
[MTCB Android Head Units Q&A] giornistrani:
Hi DSA, my motherboard is different from the others in the picture. I have to make the welding equally in C84? Thanks
[MTCB Android Head Units Q&A] Buffen:
Correction - I have seen the car today - its HAS B&M...... plus a (OLLLDDDDDDDDDD) Pioneer AVIC-U310BT Navigation receiver!

And I think the previous owner had problems with this combination, as far as I know so is there a microphone build in in the rear mirror for B&M,

but the car has (also) a small microphone mounted at the A-pillar (do you call it that in English??)

Things is (more) difficult when B&M is involved? - Right??

Cheers
[MTCB Android Head Units Q&A] DJCannonball:
i've been away from this thread for a week and droped by to check the news.

wow so the RK3066 SoM is replacable by a RK3188 SoM? my defective RK3066 is sent to china, taking ages to get it back.

So i started a chat with Klyde a new session opens, there is a contact listed 'Jenny' but she's not answering at all.

i've been in the chatroom for about 30 minutes, but there's no sign of life at all.

hilarious.. after half an hour i typed some more questions, then i got a warning i am typing too fast:

i will try by sending an email.
[MTCB Android Head Units Q&A] supremekizzle:
Can anyone with a new rk3188 unit confirm whether or not they fixed the Bluetooth call mic? Really don't want to have to tear open my brand new unit and start snipping and soldering crap. Is this prevalent with only JY, KLD, and KGL units? Those are the only links in the op is fixes for those three. I can handle little software quirks, but hardware is not something I want to have to screw with.
[MTCB Android Head Units Q&A] echudoba:
Installed DSA's latest ROM, Google app search now works, Plugging a USB in no longer resets hu (I never mentioned this before because I though I had the wrong dongle hanging out).

I still have the hang on boot up. Is there a log file I could look at to get an ideal of what might be going on? I realize that future bug fixes may correct this. But I am interested to know if anyone else is getting these hangs with a rk3188? Details: when watching the animation it hesitates or stops. When in reverse the image hesitates or locks on the screen. Pushing power button for 5 seconds until it beeps turns off the hu and it restarts OK. Happens about one in fifteen start ups.

Picture below of back side of rk3188 board. Edit added front side.
[MTCB Android Head Units Q&A] zorantoma:
JY 2.49 mcu

Here is the new MCU for JY 2.49

Enjoy
[MTCB Android Head Units Q&A] Marius B:
What model dual core or quad core ?
[MTCB Android Head Units Q&A] koimr:
GPS app

What's everyone using for a GPS app?

I like Sygic but it's been a constant battle with getting it installed properly (the official word I got from Sygic Support is that they are aware of an issue with some of our head units) so I'm looking for a good alternative. Sucks because I did pay for Sygic a couple of years ago.

I can't rely on having data so offline is preferred. :)
[MTCB Android Head Units Q&A] paki64:
CarService

I have a little problem with "carservice" app;

He fails to make synchronization with my phone; i tried with many phones (Motorola, iPhone, blackberry) but nothing; i see to radio display one icon phone blue marked;

in setting i can set only a number by 1 to 65000; i think that are tcp ports; Do you know what is the tcp port number for Blackberry?

thanks
[MTCB Android Head Units Q&A] Krisjan89:
Just to be sure. Do you have the client app installed on your phone ?
[MTCB Android Head Units Q&A] chris.epp:
Mine happens much more often than that (boots up successfully 1 in 15 maybe) however it's a SoM issue of either bad ram, or something effecting ram. Sometimes it shows 512MB sometimes 1024MB of ram. You may be having the same issue. There could be some quality control issues with the SoM cards. There is another guy with the same ram issue on here as well... I'm having trouble getting them (autopumpkin) to deal with it. Without me spending 125$ to ship it back to them at my expense, on a DOA unit.
[MTCB Android Head Units Q&A] clearchris:
Id just buy the upgraded quad core som. It would come out cheaper and faster.
[MTCB Android Head Units Q&A] passador83:
Can't boot device

Hi guys. I really hope someone help me. I've got huifei kgl car unit. Yesterday i try to make factory reset and now the unit stuck on welcome screen. When I try to get into recovery mode, the screen go black and nothing happens. Please help me:crying:
[MTCB Android Head Units Q&A] basicplus:
joying model 2818

Hi

I am looking to root and update the mcu on a model 2818, is there a root file out yet for the 600x1024....I am also getting the odd hanging boot up. Thanks..

Version MTCB-YJ-V2.46 April 09/15

Build # RK3188 eng 4.4.4 11/03/15

Model 2818

video size 600x1024
[MTCB Android Head Units Q&A] laserman123:
Will you find time to do 1024x600 of latest KLD rom?
[MTCB Android Head Units Q&A] Malaysk:
On Sunday.
[MTCB Android Head Units Q&A] leszekpap:
Malaysk - I installed your latest version of kld rk3066 but I have issue- how to remove app for weather in status bar? Because when I want to go in the system options for this then I receive information that app stopped to work... What should I do?
[MTCB Android Head Units Q&A] adrenalinh12890:
How to update .man files downloaded from the website?
[MTCB Android Head Units Q&A] Malaysk:
Before you go to the settings prognosis, you need to include in the setup and location by GPS. Settings-GPS is the latest point and there including GPS location of all sources. Then all will be well. I have a picture only in Russian
[MTCB Android Head Units Q&A] NYCAR:
Any way to get rid of static?

I installed my Pumpkin double din in my Altima. Many minor gripes and questions, but pleased overall. The biggest complaint right now is that the radio is pretty bad.

I had to widen the antenna plug to get it to actually fit in the unit and I installed the antenna adapter so that it is powered when the radio is on (hypothetically, anyway). I get all the stations I did before, but I get an annoying amount of static whenever a song plays. I don't notice it at other times, but that might be just because it isn't bothersome during commercials or speaking.

Any suggestions on how to remedy this or any other tests I can do?

Thanks
[MTCB Android Head Units Q&A] Krisjan89:
first off i would suggest to update to the newest mcu version available to your unit, this *might* take some off the noise. and update to the newest android version that you like.

switching to mono in the radio app also takes some off the static.
[MTCB Android Head Units Q&A] typos1:
The CAN Bus box gets an illumination signal from the car and then feeds it to the headunit, yo could add a switch to the wire that goes fromt he headunit to the CAN Bus box. Or search teh thread for otehr solutions, there are there, I ve read them before, Or just have the lights on all the time, I cant see a problem with this.

Not sure what BGA is clearchris - I m guessing its another way of attaching them to the board, but I thought it would be difficult with no pins, are you saying this attachment is easier, I have an RK3188 TV box with 2Gb RAM and it has Hynix memory that looks the same as those. I assumed the other chip was the flash as well.

Yeah, its A pillar in English too. You can remove the B&M but your mileage will flash, AFAIK that is the only problem, I retro fitted factory nav in my 147 and the mileage flashed then - becasue an unauthorised (ie not programmed at the factory)node (the factory nav) was found connected to the CAN Bus system, for the same reason it will flash if you remove B&M. So if you dont want the mileage to flash you will have to keep B&M connected and hide it somewhere, or you could put up with the flashing and simply reinstall B&M when you sell the car. The mic on the A pillar is not factory, someone has fitted it.
[MTCB Android Head Units Q&A] agentdr8:
Ball grid array -- I can't imagine they would be easy to replace without a rework station. I suppose you could use a toaster oven or heat gun, but how can you be sure you don't float the solder of nearby components?
[MTCB Android Head Units Q&A] typos1:
Its been said many times that the only difference between the dual and quad core models is the processor !! So the mic is the same. I have no problem with mine using the external mic, people hear me fine. You just gotta suck it and see.

Thanks for the pic of the front. Glad to hear the Google app is working now.

For the umpteenth time - THE MCUS ARE THE SAME FOR ALL VERSIONS !!!!!!!!!!!!!

Silly question TBH - "eveyone" is not using the same GPS app !! Simply type "GPS" or "Nav" into the Playstore search box and try some out, most are offline, its mainly crappy google maps that insists on being online for navigation. I like Navmii (formerly Navfree), uses Opensource maps.

Is yours a quad or dual core ? One other guy has a RAM problem with a dualcore (a problem not mentioned before he had it) someone else also mentioned they had a RAM problem the other day (maybe you?). If the item was DOA then dont hang about claim with Paypal or on your credit card, its unacceptable for a product to be DOA. Certainly NEVER pay $125 to send a DOA product back !!!!!

Ah, thanks agentdr8, [MENTION=2942402]echudoba[/MENTION] posted a pic of the other side, cant work out if it looks easy or difficult to do. I guess it would be better to wait until 2Gb becomes available, I emailed Klyde and told them they are stupid only having 2Gb available in this day and age, they said their engineer said there was no space for any more RAM on the board, I had to point out that bigger RAM modules were needed NOT more space !!

---------- Post added at 01:13 AM ---------- Previous post was at 01:00 AM ----------

The first page it clearly explains you that need a pre-rooted ROM for root on KK ROMs - not bothered to read it ??

Are you sure your version doesnt read "MTCB-JY-V2.46" ??

You have one of the new RK3188 quadcore versions and the first one in the thread with a JY (I m assuming youve got that wrong, not heard of YJ versions before). DSA has made a pre-rooted quadcore KLD ROM that would work on your unit, if you want a pre-rooted copy of the JY ROM, then he may do one for you. You need to read the last month's posts to get up to date with the quadcore units, they have some bugs at the moment, theyre likely to be sorted soon.

You need either a ground loop isolator or a static filter, does you car have an OEM antenna booster ?
[MTCB Android Head Units Q&A] MbTaNk16:
Cover the board with aluminum foil and make a cutout of only the part you're working on. It also helps to put electrical tape around the edge of the cutout.
[MTCB Android Head Units Q&A] chris.epp:
That's what I was thinking too. I just have to find a place that will sell it to me. However, since it's DOA, I'm going to dispute the purchase. I don't want that window to close so I may as well proceed with that.

---------- Post added at 02:37 AM ---------- Previous post was at 02:26 AM ----------

I'm not paying anything to send it back, I was surprised they were asking me to for a DOA product. I've opened a dispute with Paypal, never had to do that before, hopefully they do the right thing. I've had credit card companies not, this will be my first experience with a paypal dispute. It's a dual core unit. I think there were 2 other people that mentioned ram issues, and another one that had the same symptoms I have with the bad ram so he may also...

[update]

And so it begins. They are replying fairly quickly via paypal dispute, which is nice. But they are trying to send me back to the 'engineers' to diagnose and rejecting a refund asking me to ship it back. (of course, at my expense). I see this escalating very shortly to a claim...
[MTCB Android Head Units Q&A] Enc0der:
Thanks!

Apparently I have v2.16 from dec2014 in my new unit...

Is there any official / unofficial changelog for this version somewhere?
[MTCB Android Head Units Q&A] cnboyli:
Is it for RK3066 or RK3188?

Thanks.
[MTCB Android Head Units Q&A] Enc0der:
as far as I understand, both.
[MTCB Android Head Units Q&A] typos1:
There never have been changelogs for anything on these units.

MCUS ARE THE SAME FOR ALL VERSIONS, ITS BEEN SAID MANY TIMES, INCLUDING A FEW POSTS AGO ON THIS PAGE !!
[MTCB Android Head Units Q&A] Marius B:
Typos1 can make update only with mcu ?

Right now with version that have instaled i have 2 problems

1 sometime freeze în boot logo and need to reset

2 radio have poor quality sometime.

What to do ?

Sorry for questions ?

Thanks !
[MTCB Android Head Units Q&A] typos1:
Well the first thing you need to do is to read the first page immediately.

What unit have you got ?

The radio could just be bad signal if its only poor quality sometimes.
[MTCB Android Head Units Q&A] Marius B:
My unit is huifei quad core 1gb /16gb storage /hd

radio have bad signal , only some radio station have good quality but no all time.
[MTCB Android Head Units Q&A] pants001:
My headunit has a box on the antenna line with a blue wire coming out

On the ISO cable connector there is a corresponding blue wire labeled ANT

Do these need joining to give the Antenna power and better reception?
[MTCB Android Head Units Q&A] passador83:
Boot RK3066 device from sd card

Is there a chance to boot android or recovery from sd card?
[MTCB Android Head Units Q&A] echudoba:
My Quad Core also freezes sometimes in the boot logo, I used to reset but found holding the power button until it beeps and then turning it back on it starts again. I am not sure if it is defective or I just need to wait for all the bugs to be worked out in a future firmware release. Since it is costly to return I have decided to wait for a new firmware. besides it does not happen that often, 1 in 15. If anyone else experiences this issue with a Quad Cord it may be a pattern that will get looked into. Be sure to have your seller report it to the factory.

My radio reception is less than stock also as all of them. Just depends on how strong the singels are in you area.