Wifi and USB not working - MTCB Android Head Units Q&A

Hello:
I have a Pumpkin head unit Model S07 - MTCB-KLD2 migrated to Malaysk ROM 4.4.4, and everything was working until suddenly the internal WIFI didn't work anymore.
Decided to make a new upgrade, I have actually the Lollipop Android 5.1 Malaysk ROM for RK3188 1024x600, and I wasn't able to had the Wifi working. After reading posts in this Forum I've got the chance to put a Wifi USB dongle into one of the USB external ports, and for my surprise I've just discovered that both USB's are not working anymore, so actually I have a broken radio in actual state.
I've also noticed that the internal beep sound has changed to a new one, and furthermore whenever i try to get into the Recovery mode pressing until the three beeps come out, 2 seconds after this 3 beeps sounds a long beep, and the bootup menu doesn't show, so I couldn't try to update the firmware anymore.
Did you think that going back to the original Pumpkin firmware will solve the problem? Is the WIFI faulty, as I've read before, so common in these units, and there is not any workaround possible to fix it? What about the USB's broken how could I check it up? Anyone know if there exists any APP to check system LOG faults to try to guess the workarounds with all this faulty hardware? Exactly one year after I' ve bought the unit is starting to give the problems I mentioned before, programmmatic obsolescence?
Thanks for the hard work!!!!
Greetz from Madrid.

Nobody?
twelvemonkeys said:
Hello:
I have a Pumpkin head unit Model S07 - MTCB-KLD2 migrated to Malaysk ROM 4.4.4, and everything was working until suddenly the internal WIFI didn't work anymore.
Decided to make a new upgrade, I have actually the Lollipop Android 5.1 Malaysk ROM for RK3188 1024x600, and I wasn't able to had the Wifi working. After reading posts in this Forum I've got the chance to put a Wifi USB dongle into one of the USB external ports, and for my surprise I've just discovered that both USB's are not working anymore, so actually I have a broken radio in actual state.
I've also noticed that the internal beep sound has changed to a new one, and furthermore whenever i try to get into the Recovery mode pressing until the three beeps come out, 2 seconds after this 3 beeps sounds a long beep, and the bootup menu doesn't show, so I couldn't try to update the firmware anymore.
Did you think that going back to the original Pumpkin firmware will solve the problem? Is the WIFI faulty, as I've read before, so common in these units, and there is not any workaround possible to fix it? What about the USB's broken how could I check it up? Anyone know if there exists any APP to check system LOG faults to try to guess the workarounds with all this faulty hardware? Exactly one year after I' ve bought the unit is starting to give the problems I mentioned before, programmmatic obsolescence?
Thanks for the hard work!!!!
Greetz from Madrid.
Click to expand...
Click to collapse

http://www.autopumpkin.com/forum/viewtopic.php?f=3&t=777

As you could suppose I've read it, the problem is the USB malfunction that doesn't allow the workaround showed there.
Here there's a LogCat of the system when WIFI enabled:
paste board . co / n8j6icCLW.jpg

I've written in many forums as it's supposed to be a generelized problem with resellers as Eonon, Joying, Pumpkin (mine), and all those HuiFei type brands. Some of them tried a workaround setting the Date/Time not to be automatic and fied the Wifi, but no chance whenever USB/Wifi are both broken. The Pumpkin reseller asked to return the HA and charging for the fix of the PCB!!!, it sounds like I have to open up the HA, dismantle it and send it back to factory to fix. My unit it's actually exactly 1 year old, and I will be without radio until receivng it, wait for fix and resend it to me from China, charging me with a repair fee and the billing costs, and no radio plugged in my car!

Wifi and USB Fixed
Finally I've got the solution with the unvaluable Help from ZelenyR that helped me on the full process.
I've guessed that some internal resistance, capacitor, inductor was burnt, and tried to find following the PCB routes all over the circuit what in the hell were, tried to find a little burn in some of them and find finally that a small inductor L9 (all of them are inductors beginning with a 'L') did not showed on the multimeter as nornally should do, verified that is a component very sensible to tensions peaks produced because of over tension when connecting external USB electronics such as a mobile, or ext HDD. On ZelenyR's words: "The problem is inductance which you need. I used 220nH for 3.5Amp main parameter was max current over 3Amps to be sure that it will not burn again. Easiest way is just simply short this component but I don´t recommend it because it is not safe and can go to bigger damage in case of overloading USB and also it is necessary to block supply noise going to WiFi ."
Thanks to him I'm actually repaired my init luckily!!! and saved 100€ and 3 months without the unit.
Greetz

Bad eyes
I have same problem after iphone 4 was connected thru usb interface, wifi is off and cant be ON. Where is L9 located ? Try to find it about an hour...

this is....
SwIFTop said:
I have same problem after iphone 4 was connected thru usb interface, wifi is off and cant be ON. Where is L9 located ? Try to find it about an hour...
Click to expand...
Click to collapse
It's located as L19 you could see that is slightly brown (it means it's burnt) at the middle bottom of the image in a row that reads: "C103 Q9 R134 L19 R131 Q6 R128"
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twelvemonkeys said:
It's located as L19 you could see that is slightly brown (it means it's burnt) at the middle bottom of the image in a row that reads: "C103 Q9 R134 L19 R131 Q6 R128"
Click to expand...
Click to collapse
Can you mark the on the picture where the burn is? I cant see anything by L19 just the writing.

typos1 said:
Can you mark the on the picture where the burn is? I cant see anything by L19 just the writing.
Click to expand...
Click to collapse
Oh dear!! count the chips!! the legends are in the same row(1st legend, first chip, 2nd legend 2nd chip,...), it's the fourth one chip

twelvemonkeys said:
Oh dear!! count the chips!! the legends are in the same row(1st legend, first chip, 2nd legend 2nd chip,...), it's the fourth one chip
Click to expand...
Click to collapse
Chips ? Youre not talking about chips youre talking about an inducter. I can see the legends but nothing near them to show what the legend is referring to. And besides, the quote in your post says its "L9" not "L19" as you say.
Can you mark on the picture where ? I am not thinking of me, but or anyone who reads this to be able to see for reference should it happen to someone else.

Same thing happened to mine. My wifi and both usb doesn't work anymore after 8 months of use. 11-RQ0369E-US part number. I wonder if the board is the same as mine. I haven't open it yet, just wanted to confirm that it's something within the board. Everything else works except what I've described. I usually would play music through the usb. Where did you get the inductor?

za_ny said:
Same thing happened to mine. My wifi and both usb doesn't work anymore after 8 months of use. 11-RQ0369E-US part number. I wonder if the board is the same as mine. I haven't open it yet, just wanted to confirm that it's something within the board. Everything else works except what I've described. I usually would play music through the usb. Where did you get the inductor?
Click to expand...
Click to collapse
Have you tried updating the MCU ?

typos1 said:
Have you tried updating the MCU ?
Click to expand...
Click to collapse
No, I haven't. How would I do that, unless I use a sd card. Where would I get the update if there was one. I'm running the 5.1

za_ny said:
No, I haven't. How would I do that, unless I use a sd card. Where would I get the update if there was one. I'm running the 5.1
Click to expand...
Click to collapse
It doesnt matter what Android version youre running. MCUs are in the links in my signature, try an MTCC one if you have a Klyde (KLD), this is an update to MTCB

typos1 said:
It doesnt matter what Android version youre running. MCUs are in the links in my signature, try an MTCC one if you have a Klyde (KLD), this is an update to MTCB
Click to expand...
Click to collapse
signature, try an MTCC one if you have a Klyde (KLD), this is an update to MTCB[/QUOTE]
I see the firmware but it's kind of confusing me though. My MCU version is MTCC-KLD6-V2.91 May 31 2016. So I would have to download the MTCB-MTCC_lolipop_5.1.1 but noticed there are a custom and official. Should I download the official one? Thanks.

za_ny said:
signature, try an MTCC one if you have a Klyde (KLD), this is an update to MTCB
Click to expand...
Click to collapse
I see the firmware but it's kind of confusing me though. My MCU version is MTCC-KLD6-V2.91 May 31 2016. So I would have to download the MTCB-MTCC_lolipop_5.1.1 but noticed there are a custom and official. Should I download the official one? Thanks.[/QUOTE]
Neither, the MCU is separate from the ROM, I suggestd you try updating the MCU not the ROM, updating your ROM will likely not help your problem.
Try the MCUs attached, the later one first, if you get any problems try the earlier one.

Try the MCUs attached, the later one first, if you get any problems try the earlier one.[/QUOTE]
I've tried both of them and I still see the wifi being off and the USB doesn't work as well. Thank you for your time though, I appreciate it.

za_ny said:
Try the MCUs attached, the later one first, if you get any problems try the earlier one.
Click to expand...
Click to collapse
I've tried both of them and I still see the wifi being off and the USB doesn't work as well. Thank you for your time though, I appreciate it.[/QUOTE]
That was just the first thing to try.
When you say "the wifi being off", what happens when you turn it on ? USB is always not very good for various reasons, adding more power to it may help.

That was just the first thing to try.
When you say "the wifi being off", what happens when you turn it on ? USB is always not very good for various reasons, adding more power to it may help.[/QUOTE]
The wifi remains grey out in the on position, then it goes back to being off again. Before when it wasn't broken, I could turn it on and it would search for wifi but not anymore. For the USB, I can no longer use it at all. I was reading the circuit board share the same circuit so it wouldn't surprise me if it needs one because both the wifi and usb failed and stopped at the same time while driving.

Related

X18i Android dual SIM bought from Hong Kong

Hello All,
Recently I bought a X18i from PandaWill (Sorry linking is not permitted for me at this moment)
This model is similar to Sony Xperia Arc. It has 2.3.4 Android and many features but It misses other for me important as Google Talk and other I would like to uninstall (chinese apps).
Anybody can help me for rooting this phone? I tried many methods for other models but I couldn't.
Is it possible to put other ROM than installed?
Thanks in advance
Hi
I´m from Madrid too.
I read in a comment of youtube, that you can root this phone with Super One Click v2.2.
Dou you find other rom for x18i?
Dou you know the official web site of manufacturer Star x18i?
Thank you very much
Hello,
I've just rooted the phone with Super One Click and I could delete all chinese apps from factory.
The problem for this phone is the manage of two sims, I guess that there aren't any ROMS with this function implemented.
If any people knows about it please, post it.
I don't know the manufacturer web
Regards
What ROM would you root it too? Doesn't this already come with Gingerbread 2.3.4
Anything more than that is probably going to be to much for the processor
remember it's only 650mhz, I would just keep what you have, root it, remove the
bloatware and customize it to your taste, that's just me speaking though. Until more is known about the phone, I wouldn't do anything at all.
Yes. You are right. I rooted the phone and deleted all annoying apps. Now I'm wondering if there is any ROM suitable for it.
Now I'm trying to look for google talk app because the phone doesn't has.
Thanks!
Problmes in rooting
autoca said:
Yes. You are right. I rooted the phone and deleted all annoying apps. Now I'm wondering if there is any ROM suitable for it.
Now I'm trying to look for google talk app because the phone doesn't has.
Thanks!
Click to expand...
Click to collapse
Hi autoca:
This is my first post since i was looking someone having same cell phone and who could root it.
I have tried several times with SuperOneClick, but it stops on step #7 Waiting for device so long.
How have you make it? Could you please explain it in more detail.
I am form Spain too
Thanks a lot
is this SE?
you can root with newer flashtool
then install titanium back up pro
uninstall app that you needed
it is a SE clone... and i do not know if this will work. I've tried with SuperOneClick and z4root but nothing.
I am finding some new strange things happening on mi x18i cell phone:
- I cannot see the front LED light indicator of battery status, charging and other info (messages, missing calls...)
- I cannot operate the cell phone while it's being charged: it starts to open apps and type randomly by itself... and it opens the notification bar, activate and deactivate wifi, GPS...
Has anybody similar experiences?
Thanks in advance
sentito said:
I am finding some new strange things happening on mi x18i cell phone:
- I cannot see the front LED light indicator of battery status, charging and other info (messages, missing calls...)
- I cannot operate the cell phone while it's being charged: it starts to open apps and type randomly by itself... and it opens the notification bar, activate and deactivate wifi, GPS...
Has anybody similar experiences?
Click to expand...
Click to collapse
Hi, I don't have x18i phone myself yet but I ordered one and I wait still for delivery. I've found in a Russian forum a discussion about the x18i phones and they say
- it doesn't have any status LED
- the charging problem is caused (maybe only partially) by the charger supplied with the phone. If it is charged from a computer there is no paranormal activities with the phone. So they buy another USB charger to replace the charger supplied with the phone.
Hello,
I used SuperOneClick without problems. I didn't do any special for rooting the phone.
As Anjolle said, phone doesn't have any led for signalling and the problem with the charger I never had because I always charge the phone with a samsung charger or with computer.
Hello X18i users,
I have this phone since 2 weeks and I'm satisfied by the overall functionalities.
No issue observed yet except about the poor quality of the USB cable
On some PCs, it was not possible to synchronise the phone with computer or to activate the usb storage (to see SD card folders on PC).
So I decided to buy a new usb cable with better quality and now everything is working perfectly.
So the issue came from usb cable ...
regards
---------- Post added at 11:39 PM ---------- Previous post was at 11:23 PM ----------
Anjolle said:
Hi, I don't have x18i phone myself yet but I ordered one and I wait still for delivery. I've found in a Russian forum a discussion about the x18i phones and they say
- it doesn't have any status LED
- the charging problem is caused (maybe only partially) by the charger supplied with the phone. If it is charged from a computer there is no paranormal activities with the phone. So they buy another USB charger to replace the charger supplied with the phone.
Click to expand...
Click to collapse
Hello Anjolle, hello Sentito,
Here is my feedback about status LED on x18i:
- on my phone, a red led is flashing slightly on front panel when the phone is in line.
It's the only situation when the LED is visible (nothing during charging or to indicate you missing call ...)
- No problem when phone is connected to PC by USB cable since I replaced the USB cable by newer with best quality
The slightly flashing red LED is part of proximity sensor. It turns off the touch screen when the phone is near your face.
By the way some of the X18i phones have the proximity sensor installed and some don't as people have reported in other forums.
you're right. when approaching the phone to the ear (or put your finger on the sensor), the screen turns off and switch on again as soon as the phone is away. Interesting to know... Thank you for the information.
About root procedure of this device, is someone could share a clear procedure to do it (with SuperOneClick for example) ? Thank you in advance.
I saw also a procedure where people used gingerbreak to root most of known device, but not sure it will work with x18i ...
best regards
I used SuperOneClick without problems. I didn't do any special for rooting the phone.
For some reason I cannot root my phone using superoneclick I tried it at in freezes everytime on the first process on two different computers, I think depending on who you buy it from, some may lock the bootloader some may not. But there is always wH around it, it your having issues with rooting try clokworkmod from the recovery screen via the sd card.
Hi
Do you have the same boot menu than this person from youtube video (see at 2:30)
youtube.com/watch?v=9vExc21fUKc&feature=related
Mine is only twice the bee and a blue droid ...
Do you think this device is rooted ?
Hi all,
I was trying another charger and doing it by PC-USB connection and there is not any problem with the cell phone, so really the problem comes from the carger!! Thanks
Mine have no LED nor proximity sensor as indicated in previous posts... I will try to contact again supplier.
Regarding the rooting: I will try with other USB cable just in case...
Thanks to all.
Other question: do you now if I can use the TV reveiver with DVB (TDT) non-analogic but digital signals??
Cheers
Anjolle said:
Hi, I don't have x18i phone myself yet but I ordered one and I wait still for delivery. I've found in a Russian forum a discussion about the x18i phones and they say
- it doesn't have any status LED
- the charging problem is caused (maybe only partially) by the charger supplied with the phone. If it is charged from a computer there is no paranormal activities with the phone. So they buy another USB charger to replace the charger supplied with the phone.
Click to expand...
Click to collapse
I´m from Madrid too.
I read in a comment of youtube, that you can root this phone with Super One Click v2.2.
Dou you find other rom for x18i?
Dou you know the official web site of manufacturer Star x18i?
Thank you very much
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sentito said:
Other question: do you now if I can use the TV reveiver with DVB (TDT) non-analogic but digital signals??
Click to expand...
Click to collapse
No, the TV receiver is analog. It can't show you digital broadcast.
It's useless in my country too, so I uninstalled the TV app but unfortunately the FM Radio app was uninstalled as well. I can't figure out how to restore the FM radio app.
hon kong is great.

Going crazy! No way to put Malaysk ROM on head unit!

Ive tried everything I can think of and it wont work. I have two head units. My older GA5153 was almost too easy. I inserted the SD card into the GPS slot and the unit recognized it and suggested an update. A few minutes late...it was done! My new unit is a Witson that I found on AliExpress. I love the 9 inch screen and the fact that its a quad core, but the UI just isn't doing it. It remembers most things but there's little settings that revert every time you restart the unit. I want the new ROM on there but its just not happening.
The issues Im running in to currently:
Theres no Physical buttons on the unit. I should be able to use the reset as a select button but I haven't got that far yet. The problem there is every time I boot into recovery mode its just the android on his back and it says "No Command".
The unit doesn't do any type of auto update like the GA5153 did.
It almost seems as if the UI was designed to try to prevent people from upgrading. Any and all help is appreciated as Ive been at this for hours and hours with no success. Thanks guys!
Can't you use a USB keyboard?
themissionimpossible said:
Can't you use a USB keyboard?
Click to expand...
Click to collapse
As bad as it sounds, I didn't even think of that. One of the wiring harnesses in the back has a usb port on it. Ill have to see if itll read it when I plug it in.
The unit recognized the keyboard and it was functional while the unit was on, but it wouldn't work in the recovery menu. I'm not sure what to do anymore. All the ROM installer apps Ive tried have failed to recognize the ROM on the SD card. Its very frustrating but I will make this work.
What Witson model do you own?
Are you sure it's a MTCB HU?
Have you tried to contact the manufacturer?
I dont think your Witson unit is an MTCB HU.

MTCD unit does not start

Hello everyone, I have a PX3 unit, Android 5.1.1 and MTCD_KD_V1.82_1 MCU version. It is car-specific (Suzuki Swift 2007) with physical buttons on its faceplate.
Suddenly (without any software or hardware modification) it decided never to start again. Short pressing the power button does nothing at all. Short pressing the reset button flash the leds for a second, but nothing else happens and the screen remains black. Putting the reverse gear (I have a rear camera installed) does not activate the rear camera input too.
I have already tried disconnecting its power completely.
I tried to enter the recovery mode by keeping the power button pressed. After about 15 seconds the leds flash 3 times and then they stay on as long as I keep the power button pressed. I tried pressing the power button for 3 seconds right after the 3 led blinks, but I wasn't successful. I tried many times long press the power button for 15 seconds and a short press right after the 3 led blinks. No success. Anyone knows what is the procedure for entering the recovery mode on KD units? I also tried keeping the reset button pressed for long time, nothing happened. Right now that I am writing these lines (the last move I made was short pressing the reset button), it blinks the leds once every 1 minute exactly.
If I enter a cd in the disk tray, it loads it inside its mechanism, and it ejects it when I press the eject button. But nothing more. Screen always remains black.
Any ideas?
nobody?
does my problem seem to be on the SoM or mainboard?
anyone knows if I can't get in Recovery Mode, is this a problem of the MCU or the SoM ?
Hi mate, have a similar situation. Do you solve it?
Probably the problem occurs in the SOM.
If the LEDs are blinking, loading/unloading the DVD/CD means that the MCU works.
What did the reseller suggest when you contacted support?
marchnz said:
What did the reseller suggest when you contacted support?
Click to expand...
Click to collapse
Well, they suggest to make some tests. One with the reset and power button, that result doing nothing, just a buttons light blink after release. And the other is make a bridge between BATT+ and ACC on cambus female connector (without cambus connected) and try to power on, but nothing happen too.
I test voltage on terminals, harness wires, fuse.. all ok.
Was strage that after 3 days of this problem, finishing a ride, HU wake up. Day after that, dont power on anymore.
Any suggestion is welcome Marchnz. Essentially if open the chassis is needed.
Thanks in advance!
Pol
Have you tried to press buttons on the display (where they were supposed to be) in order to check if display is failed only but the unit is working?
connecting a USB with music should it open autmatically the mp3 player and so on...
I did suffere that similar situation and myunit was responsive to touch but no display.
ikerg said:
Have you tried to press buttons on the display (where they were supposed to be) in order to check if display is failed only but the unit is working?
connecting a USB with music should it open autmatically the mp3 player and so on...
I did suffere that similar situation and myunit was responsive to touch but no display.
Click to expand...
Click to collapse
Thanks mate, and yes, I try, but doesn't work. Is completely dead. Now Im asking me if is a electronics failure or a brick...
Thanks for your suggestion.
P
Well, tech support of reseller determine that SOM have some problem... but guess what... they cant repair it cose my MTCD 2017 is discontinued!!! jaja oh god!
They offer me to buy a new one at half price. I live in Argentina and shipping will kill me.. so, I would need some help here open the unit and check components and soldering points.. is there some caritative soul who can help me or guide me a little?
Thanks in advance!
polgoz said:
Well, tech support of reseller determine that SOM have some problem... but guess what... they cant repair it cose my MTCD 2017 is discontinued!!! jaja oh god!
They offer me to buy a new one at half price. I live in Argentina and shipping will kill me.. so, I would need some help here open the unit and check components and soldering points.. is there some caritative soul who can help me or guide me a little?
Thanks in advance!
Click to expand...
Click to collapse
Show us your board, we will show you ours =)
I have a similar problem at the moment, last week some smd component burnt because of all the heat / temperature here in germany =)
Thanks mate, here some pics of the HU opened. No melt components. no soldering fails at first view.. not changes making percusive hits over components.. Im lost...
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that looks strange for me from here =)
EDIT: ahh nevermind, i think it has circuits for a transistor or similar but may be ok, still is the soldering ok there or did it get loose?
EDIT2: what i also had, try putting pressure on the midst of the contacts of the SoM and try to turn it on, what you also can do is to apply power and put some force on the contacts from left to right to maybe find out that it turns on suddenly =)
Kayhan 17# said:
that looks strange for me from here =)
EDIT: ahh nevermind, i think it has circuits for a transistor or similar but may be ok, still is the soldering ok there or did it get loose?
EDIT2: what i also had, try putting pressure on the midst of the contacts of the SoM and try to turn it on, what you also can do is to apply power and put some force on the contacts from left to right to maybe find out that it turns on suddenly =)
Click to expand...
Click to collapse
I did it, I press everywhere looking for a bad contact, but nothing. What I suspect is about the source DC input, some capasitor, Zener, or diode.
Because the Hu history tells about first day of no power, second day no power till suddenly reacts an power on alone. Third and beyond never power on again.. so.. if SOM is melted or bad, this resurrection randomly doesn't have explanation.
Oh, do you have sd cards inserted? Remove them and give a go?
Kayhan 17# said:
Oh, do you have sd cards inserted? Remove them and give a go?
Click to expand...
Click to collapse
Do you think this sd cards would be a problem to power on? I dont think so..
When I connect and desconnect the power supply from the board., HU reactos power on the button leds and immediately it power off and nothing more happen.
I had similar issues, remove cards and try if it works. I couldnt believe either ...
Kayhan 17# said:
I had similar issues, remove cards and try if it works. I couldnt believe either ...
Click to expand...
Click to collapse
Thanks for your help. Did you thinking on buy a PX5 4g SOM to replace the "bad" one?
@marchnz, im planing to apply your flash OTG method. Do you think it can work for my lock HU?
https://forum.xda-developers.com/android-auto/mtcd-hardware-development/px3-5-headunit-mod-recover-flash-som-t3766892

PX5 stuck showing warning image, buttons unresponsive.

I just bought a PX5 unit, which seemed to be working perfectly until I finished installing it into my car and now it has become unresponsive with a black screen and a yellow rhombus with an exclamation point in the middle (unable to upload image as new user).
If I turn off the ignition, it will turn the stereo off and the android screen briefly shows before going into sleep. None of the buttons are allowing me to get past the screen and in to android. The reset button seems to do nothing, android is definitely running in the background, just unsure as to why this screen will not close. Any ideas?
Hi, I think I saw a yellow rhombus with an exclamation point when I was installing my radio and rear view camera was not connected to the radio. I think that it is a warning about missing video signal when radio is displaying live feed from a rear view camera.
So, one explanation for your issue could be that the radio thinks you are reversing, and the rear view camera is not connected to the radio. If I understand it right, radio can switch to rear view camera display mode based on two conditions 1) canbus information 2) +12v trigger signal.
For the condition 2), you could check that nothing is unintentional connected to reverse detect wire. If that does not help, then you could perhaps try to disable reverse view feature in the configuration menu before installing the radio to the car and/or find a working canbus configuration settings.
Please notice that I'm a beginner with Android head units and your problem might well be something totally different!!
Thanks for your reply. Some of your post seems to relate to my issue definitely, I think it is linked to the rear view camera which is currently disconnected. However I am unable to get into any configuration options. None of the buttons/resets I try get me past the exclamation screen, I can only see android once I turn off my ignition when it tells me it is closing down. None of the various reset button combinations seem to do anything with my head unit either, can't seem to reset it properly. Its strange, I will reattach the camera tomorrow and see if that brings any joy. I don't know anything about this stuff myself but I am wondering if I did something to the head unit to brick the non-android side somehow.
Edit: Unfortunately reattaching the camera did not change anything.
Update. I have managed to find a way in to the Android side if I connect my phone via bluetooth to the stereo, it then lets me use the split screen function via the top bar menu to put the warning screen other screen to the side, however whenever I touch the screen or attempt to use the android interface, my stereo goes back to the warning screen, none of my inputs via the stereo buttons or the touch screen seem to be registering with the Android side? Very confused. I have also tried as many button combination resets I can find and I have not been able to successfully get into the recovery menu, or any change except rebooting.
Was your unit professionally installed?
Also, what did the re-seller suggest when you contacted them for support?
No the unit was not professionally installed. I am not sure how I've become stuck with the problem. I made some minor changes in factory settings but nothing I thought would of caused this. The seller is yet to respond and its been a couple of days, but I have requested the hardware reset methods for this unit or any other solutions.
deano35 said:
No the unit was not professionally installed. I am not sure how I've become stuck with the problem. I made some minor changes in factory settings but nothing I thought would of caused this. The seller is yet to respond and its been a couple of days, but I have requested the hardware reset methods for this unit or any other solutions.
Click to expand...
Click to collapse
Check the reverse wire on the back of the unit...if necessary disconnect it to ensure no reverse signal is received.
If your unit can boot into android normally then you will have to figure out why the reverse wire is receiving signal .
Check your connectors to avoid any of them to be loose.
Enviado desde mi SM-G950F mediante Tapatalk
Everything has been disconnected from the unit except the power cable to car and and canbus, from what I can tell nothing is loose. Unit will not boot without the canbus box whatsoever, not sure if that is meant to happen.
deano35 said:
Everything has been disconnected from the unit except the power cable to car and and canbus, from what I can tell nothing is loose. Unit will not boot without the canbus box whatsoever, not sure if that is meant to happen.
Click to expand...
Click to collapse
Yes, canbus decoder need to be connected for power up the HU. If you dont need the decoder box you need rewire the harness.
I think I am going to have to request a refund and return it. Still no reply from the reseller and I am not sure what else I can try, everything that is not needed to power it has now been removed. I can't send links or else I would update the thread with a video of the touch/physical buttons being completely unresponsive even when I manage to get to Android. The unit has definitely developed a fault and I am unable to reset it. Admittedly it could be my fault somehow as it was working for the first few boots, but unless they give me something to try I am just going to have to send it back.
Quick bump. Has anyone got any further ideas? I bought off Aliexpress so contact with the seller is slow and painful, they do not seem to understand the issue and just keep telling me to disconnect all wires and reconnect. Which has been done many times. If anyone wants to post a link to the video for me I would be happy to send them it privately.
deano35 said:
Quick bump. Has anyone got any further ideas? I bought off Aliexpress so contact with the seller is slow and painful, they do not seem to understand the issue and just keep telling me to disconnect all wires and reconnect. Which has been done many times. If anyone wants to post a link to the video for me I would be happy to send them it privately.
Click to expand...
Click to collapse
I would start a dispute with them. I had a device that they sent with similar problems and plenty of issues, which they would not help with or would not understand. Best option is to dispute to get a new device or a full refund. Could you send the video?
xLeviNx said:
I would start a dispute with them. I had a device that they sent with similar problems and plenty of issues, which they would not help with or would not understand. Best option is to dispute to get a new device or a full refund. Could you send the video?
Click to expand...
Click to collapse
Yeh I have a dispute open currently, just was hoping it would inspire the seller to actually offer up a working way of resetting the device. Had to add link below seperately as needed to be ten or most posts.
https://www.youtube.com/watch?v=ujHacKESAT8&feature=youtu.be
The stereo defaults as the warning image black screen and I can only get android up using the multiwindow button with a long press. Then the android side will not register any input and will keep trying to put the black screen to the front.
Update: I have been told by Aliexpress I can have a partial refund and keep the unit, or a full refund if I return to China. Anyone have any ideas how I would go about resetting the unit if I took the partial refund? To be honest I think my only option is to return it and get the full amount back but any ideas would be welcome! Shipping to China and awaiting a refund is going to take weeks, would rather just get it working if possible.
deano35: any progres? I have the same problem as you. This is my post from PX5 MTCD/E Head Unit Discussion Thread
" Hi , I have https://s.click.aliexpress.com/e/DtwdJIt its px5, Mtce_gs_v2.90c. Now I have a little problem with rear camera. I bought reverse camera and tried to connect it into front camera input(I was curious how it would look like) and since then its stuck on camera view. Even after disconnecting camera. Only solution was disable "prohibit reverse" in factory settings menu, but with "prohibit reverse" disabled is obviously not showing reverse camera when I gear the reverse down. Everything is shown in this video. https://photos.app.goo.gl/XbYUHApzT8qTezkq6 Thanks for any advice. "
Take a look on the video, its similar as yours.

Question Flashed wrong firmware by mistake and now wont go into bootloader or fastboot

Downloaded a link from this article on XDA https://www.xda-developers.com/pixel-6-november-update-fingerprint-bug-fixed/
but didn't realise they had posted the wrong link and instead used the link for pixel 5a. Phone will connect and disconnect whenever i press power button or either volume buttons. Tried the usual force restart and bootloader button but still black screen and laptop not recognising phone except showing as USB serial device briefly when it does connect
muzab a said:
Downloaded a link from this article on XDA https://www.xda-developers.com/pixel-6-november-update-fingerprint-bug-fixed/
but didn't realise they had posted the wrong link and instead used the link for pixel 5a. Phone will connect and disconnect whenever i press power button or either volume buttons. Tried the usual force restart and bootloader button but still black screen and laptop not recognising phone except showing as USB serial device briefly when it does connect
Click to expand...
Click to collapse
I was messing around with my 6 Pro and ended up in recovery mode. None of the normal button combos were wrorking.
I ended up holding the power button / vol down for nearly 30 seconds and it rebooted back to the fastboot/bootloader mode.
Not sure if this will help you but the usual shorter time needed to boot wasn't working for me, but holding for 30 seconds did.
Good luck!
You could always try Official Google Pixel Update and Software Repair or Official Google Android Flash Tool.
Also, always go directly to the source Pixel 6 Pro Factory Images, don't trust anyone else's links.
didn't work but i can see it connecting and disconnecting constantly. did you have the device show up as USB serial device. Also what kind of cable did use (usbc to usbc?)
muzab a said:
didn't work but i can see it connecting and disconnecting constantly. did you have the device show up as USB serial device. Also what kind of cable did use (usbc to usbc?)
Click to expand...
Click to collapse
You might want to "Reply" or "Quote" the person you're responding to, so they get a notification that they're tagged and know that you have a question for them. I assume you're responding to @Az Biker.
When you have it plugged into your computer, do you see it in Device Manager? USB-C <-> USB-C or USB-A <-> USB-C shouldn't matter, as long as it's the original or a quality cable (Anker or from a previous PIxel or other quality OEM cable).
You can attach a screenshot of your Device Manager if you're not sure what you're looking for.
roirraW edor ehT said:
You might want to "Reply" or "Quote" the person you're responding to, so they get a notification that they're tagged and know that you have a question for them. I assume you're responding to @Az Biker.
When you have it plugged into your computer, do you see it in Device Manager? USB-C <-> USB-C or USB-A <-> USB-C shouldn't matter, as long as it's the original or a quality cable (Anker or from a previous PIxel or other quality OEM cable).
You can attach a screenshot of your Device Manager if you're not sure what you're looking for.
Click to expand...
Click to collapse
sorry , its showing as USB serial device (COM3) under ports section.
muzab a said:
sorry , its showing as USB serial device (COM3) under ports section.
Click to expand...
Click to collapse
No sweat! And it doesn't have an exclamation point through it's icon in Device Manager, right? (which would mean you need to install the latest Google USB Driver).
roirraW edor ehT said:
No sweat! And it doesn't have an exclamation point through it's icon in Device Manager, right? (which would mean you need to install the latest Google USB Driver).
Click to expand...
Click to collapse
nope no exclamation mark. google USB driver installed too
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muzab a said:
nope no exclamation mark. google USB driver installed too
Click to expand...
Click to collapse
Are you able to shut the phone off? If so, shut it off, wait 10 minutes, then try it again.
Follow Google's instructions exactly on the Official Google Pixel Update and Software Repair or Official Google Android Flash Tool web page.
Try another USB port.
Try another USB cable.
If a desktop PC, try one on the back instead of the front - although I think this has been making less and less of a difference in recent years.
Try rebooting the PC/laptop.
Have a spare PC/laptop to try fresh?
roirraW edor ehT said:
Are you able to shut the phone off? If so, shut it off, wait 10 minutes, then try it again.
Follow Google's instructions exactly on the Official Google Pixel Update and Software Repair or Official Google Android Flash Tool web page.
Try another USB port.
Try another USB cable.
If a desktop PC, try one on the back instead of the front - although I think this has been making less and less of a difference in recent years.
Try rebooting the PC/laptop.
Have a spare PC/laptop to try fresh?
Click to expand...
Click to collapse
cant tell if phone is shut off or not, but it is a black screen and have tried power button and vol up and down for 30 sec (but no indication that its force shut off), tried another cable and another laptop and same symptoms.
muzab a said:
cant tell if phone is shut off or not, but it is a black screen and have tried power button and vol up and down for 30 sec (but no indication that its force shut off), tried another cable and another laptop and same symptoms.
Click to expand...
Click to collapse
I think it's time that you need to contact Google, unfortunately. Unless someone else has some better ideas. Sorry to hear.
muzab a said:
cant tell if phone is shut off or not, but it is a black screen and have tried power button and vol up and down for 30 sec (but no indication that its force shut off), tried another cable and another laptop and same symptoms.
Click to expand...
Click to collapse
Try just power button for 30-45 seconds.
Long shot idea here.
Plug the phone into the charger, see if you get a charging symbol (indicating it is off).
If no charging symbol, should indicate device is still on, allow battery to run out. After a day or two, start plugging in the device momentarily to see if charging animation comes up.
Maybe after shutting down/running out of battery, you can recharge and get into bootloader?
Like I said, long shot idea..
Best of luck!
Az Biker said:
If no charging symbol, should indicate device is still on, allow battery to run out. After a day or two, start plugging in the device momentarily to see if charging animation comes up.
Maybe after shutting down/running out of battery, you can recharge and get into bootloader?
Click to expand...
Click to collapse
I agree. I have definitely had to do something similar, I believe with my LG G3 once or twice. Had to turn it off or let it die, then leave it alone for a while. Sounds crazy, but whatever works...
roirraW edor ehT said:
I agree. I have definitely had to do something similar, I believe with my LG G3 once or twice. Had to turn it off or let it die, then leave it alone for a while. Sounds crazy, but whatever works...
Click to expand...
Click to collapse
When they switched to non-removable batteries and you had to let it die instead of simply pulling the battery
Good times
Az Biker said:
Try just power button for 30-45 seconds.
Long shot idea here.
Plug the phone into the charger, see if you get a charging symbol (indicating it is off).
If no charging symbol, should indicate device is still on, allow battery to run out. After a day or two, start plugging in the device momentarily to see if charging animation comes up.
Maybe after shutting down/running out of battery, you can recharge and get into bootloader?
Like I said, long shot idea..
Best of luck!
Click to expand...
Click to collapse
Thanks will try this. I have spoken to google to get a replacement but hopefully i can get this current one working again
This isn't the kind of mis-flash I'd expect a phone to survive. Pixels tend to accept whatever firmware you throw at them with practically zero version or compatibility checks. In your case, going from a Qualcomm to a Samsung bootloader is likely fatal.
I'm surprised it even shows a device. Maybe a rescue path, but I wouldn't even know where to begin with drivers if generics aren't good enough. If you aren't getting a "fastboot devices" response, that's game over. How did you flash this in the first place? How far did it get?
just a heads up, that link under pixel 6 pro Global is still incorrect and is pointing to pixel 5a
LLStarks said:
This isn't the kind of mis-flash I'd expect a phone to survive. Pixels tend to accept whatever firmware you throw at them with practically zero version or compatibility checks. In your case, going from a Qualcomm to a Samsung bootloader is likely fatal.
I'm surprised it even shows a device. Maybe a rescue path, but I wouldn't even know where to begin with drivers if generics aren't good enough. If you aren't getting a "fastboot devices" response, that's game over. How did you flash this in the first place? How far did it get?
Click to expand...
Click to collapse
wasn't familiar with the p6 pro codename so when i used the link under the XDA article i guess i didn't pay attention to the name of the file. Lesson learnt
Reported it and it's fixed now.
@muzab a
Kindly share the hardware ID of the USB Serial Device.
Since the Pixel 6 family's Google Tensor silicon is somewhat based on the Exynos chipset, it could be possible to use the Exynos hard brick recovery method to revive the device (context: 1, 2).
If possible, initiate the replacement process. But discovering a community-supported method for unbricking these devices would be great. For your information, we never got our hands on the low-level firmware packages for the older Pixels with Snapdragon family of SoCs.

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