yashsingh1/xdaforums huggingface dataset:
[MTCD  Android Head Units Q&A] s.rahus:
Guys,

Got the latest XRC MCU from my seller. I am travelling and away from my car, so haven't tried it yet.

Cheers,

Rahul U S
[MTCD  Android Head Units Q&A] cecengazi:
Thanks.

I have update my mcu to 2.72, but the Mic don't work with ok Google.
[MTCD  Android Head Units Q&A] s.rahus:
(1) Did the reboot help?

(2) Did you install any app or changed any setting after which the mic stopped working?

Thanks,

Rahul U S
[MTCD  Android Head Units Q&A] blitzkriegoutlaw:
It did an update for Google Play which then caused further app updates. Everything worked fine again after the reboot.
[MTCD  Android Head Units Q&A] s.rahus:
Thanks! What was the mic behavior when it was not working? It was not capturing anything (as if there is no mic at all)? For me when I use the mic outside the bluetooth app, nothing happens, the behavior is such that the app is not even detecting the mic.

Cheers,

Rahul U S
[MTCD  Android Head Units Q&A] typos1:
[MENTION=5092263]Hal9k_[/MENTION] is getting one of these and making a version of his ROM for it (and for L units), maybe he can sort this issue out.
[MTCD  Android Head Units Q&A] s.rahus:
I too believe so, send a PM few weeks ago, did not get any response though- we all know he is a busy man.

Cheers,

Rahul U S
[MTCD  Android Head Units Q&A] rasnicop:
Hi,

I have the same radio and I get the same problem. I contacted with the vendor and this is my conversation:

Me

17/11/04 09:44

I update you the situation. I have disconnect to external microphone to test if the integrated microphone works but neither works. With integrated microphone Google Voice Search doesn't work.

david chen

17/11/05 22:32

hi friend

I check it and consult with the engineer.the device cant support that function

Me

17/11/05 23:26

Oh! Why not? For me is very important to send command voices to call people, etc.. Other radios that I have had support that function

david chen

17/11/05 23:35

hi friend

sorry,the dvd cant support that

Me

17/11/05 23:38

And can I do things to habilite that or is impossible?

david chen

17/11/06 00:37

hi friend

sorry,i am afraid it is not

I hope that someone can solve this.

Thanks
[MTCD  Android Head Units Q&A] Senorclean:
Hi guys

I got my hizpo branded xrc px3/2gb unit this week and the internal mic works for voice search etc.

Is the anything I can check in software to help you narrow down what is different? Maybe it's something in factory settings?

Photos of software version below:

https://imgur.com/a/DaIa8
[MTCD  Android Head Units Q&A] joules33:
Hi,

i have the same problem. Nobody has looked for hardware issue. My Bluetooth chip is SD-968. What is yours ? You can see it in parameters --> Developper options

Thanks !
[MTCD  Android Head Units Q&A] Senorclean:
Mine is MD725 - maybe that is a hint?
[MTCD  Android Head Units Q&A] typos1:
If everyone with the problem can check what BT they have and post we can see if its to do with this.
[MTCD  Android Head Units Q&A] JokinenK:
This problem does not only affect PX3 units - mine is PX5 and it suffers from the very same problem. Mine is also fitted with SD-968 bluetooth module (it's barely working, requires reboot to show up).
[MTCD  Android Head Units Q&A] typos1:
What MCU is yours ?
[MTCD  Android Head Units Q&A] JokinenK:
MTCD/MTCE_XRC. Currently running v2.54a_1, but tried various versions.
[MTCD  Android Head Units Q&A] typos1:
Strange, I had an RK3188/PX3 2Gb Nougat XRC unit with the problem, but after installing an RK3368/PX5 SoM the mic worked as it should.
[MTCD  Android Head Units Q&A] MrGubby:
I have MD725 and microphone works outside of BT app
[MTCD  Android Head Units Q&A] dbenet:
I tried to change factory setting bluetooth to MD725 with no luck (also "NO" value).

Anyone who has a XRC unit with mic working (outside BT) has flashed another ROM and still mic is working?

I want to discard if MIC is working by any special configuration made on stock ROM or it's anything else (MCU, hardware, etc).
[MTCD  Android Head Units Q&A] kiru:
Maybe it's units that come with the DVD player that don't have the mic working?
[MTCD  Android Head Units Q&A] typos1:
Nope, on my XRC Nougat unit it didnt work and that has no DVD player.
[MTCD  Android Head Units Q&A] joules33:
Tale a look at this post it seems no use of android api with sd-968

https://xdaforums.com/android-auto/...px5-solution-bluetooth-echo-v2-t3661284/page5
[MTCD  Android Head Units Q&A] typos1:
OK, have all posters posted what BT theyre using so we can see if it affects only SD-968 units ? . . .
[MTCD  Android Head Units Q&A] dbenet:
I have SD-968 and mic not working.

I can't test that until weekend but maybe a solution is to replace the sdsdk968 driver with the one provided with PX5 units that seems to be working.

[MENTION=456516]typos1[/MENTION] can you provide you sdsdk968 that seems to work ok?

Enviado desde mi Redmi Note 3 mediante Tapatalk
[MTCD  Android Head Units Q&A] typos1:
Ok, for speed, where is it ?
[MTCD  Android Head Units Q&A] dbenet:
Don't know but I suppose on /system/lib folder
[MTCD  Android Head Units Q&A] ricanxd:
SD-968 for me as well. Same issue.
[MTCD  Android Head Units Q&A] dbenet:
I tried to replace /system/bin/sdsdk968 with the PX5 one version but it didn't worked.
[MTCD  Android Head Units Q&A] epicdsl:
Hi

sorry if the details i give are not in detail. android devices are not my area of expertise, i have a hizpo unit model AD7108F with RK3188 px3 2GB Ram 16GB Rom, this unit is designed for ford focus st mk2, i also cannot get google now. google assistant to work. my unit contains an icon called "voice search" when i press it the google assistant type interface pops up and says "listening" then says "say ok google becuase it cannot hear me, when i try to install google assistant i get an error telling me google assistant isn't available for my device., when i try train my voice for ok google it does not work and voice recorder apps also do not work so i guess im unlucky like everyone else

i'm sorry but i was unable to find what BT module my device is using. im on the stock rom that came with the unit 7.1

[IMG="Voice search button"]https://i.imgur.com/JPsKTg4.jpg[/IMG]

[IMG="google assistant"]https://i.imgur.com/8w1XWLm.jpg[/IMG]

[IMG="Device Details"]https://i.imgur.com/87DVpHq.jpg[/IMG]
[MTCD  Android Head Units Q&A] s.rahus:
So you've got an XRC unit. To know the BT chip, go to Factory Settings (password is 126)-> In the "App" tab check what is written against BT. It could well be SD-968.

Cheers,

Rahul U S
[MTCD  Android Head Units Q&A] s.rahus:
All the folders and files should have the permissions set properly, hope this was done?

Cheers,

Rahul U S
[MTCD  Android Head Units Q&A] epicdsl:
yep XRC unit and same issue as everyone else. thank you sir, i will jump in and check what BT Module i have tomorrow when i'm in the car and post back my findings. all other specs and details other then the BT that is currently unkown is the same as one of the people reporting theirs is working in earlier pages of this thread, their has to be a difference some how in these units thats making some work and some not even with the same SoC
[MTCD  Android Head Units Q&A] dbenet:
Yes, all permissions are set properly. Next time i can test anything i Will try some apps that can redirect bluetooth input to other apps (like Bluetooth Launch)

Enviado desde mi Redmi Note 3 mediante Tapatalk
[MTCD  Android Head Units Q&A] s.rahus:
Are you familiar with the Bluetooth Launch app? Can it capture voice via BT and just pass it through to the Google voice search app?

Cheers,

Rahul U S
[MTCD  Android Head Units Q&A] MrGubby:
Mine has DVD and working mic (Witson MX unit)
[MTCD  Android Head Units Q&A] dbenet:
I'm not familiar with that app. I tried that 5 minutes (didn't had more time for now) without results. I'm searching for an app that can redirect bluetooth sound (as it seems mic sound comes from bluetooth Channel) to Mic Channel or other apps like Google voice. I tried the same some months ago with sound about app without luck. If i have no results i Will try to develop one to do that but i need more time for that.

Enviado desde mi Redmi Note 3 mediante Tapatalk
[MTCD  Android Head Units Q&A] s.rahus:
Wow! If you can develop an app for this, that would be great!

Cheers,

Rahul U S
[MTCD  Android Head Units Q&A] epicdsl:
i can confirm mine is not working as others have said and my Bluetooth module is a SD-968
[MTCD  Android Head Units Q&A] s.rahus:
Yeah, mine too!

Cheers,

Rahul U S
[MTCD  Android Head Units Q&A] flimsflims:
I also have SD-968 :( and does not work :crying::crying:
[MTCD  Android Head Units Q&A] s.rahus:
Anyone tried using an external "USB" microphone? Probably this is something we have to try next.

Cheers,

Rahul U S
[MTCD  Android Head Units Q&A] BeerAndPies:
I tried the microphone below from Amazon UK and no luck. This worked fine with Ubuntu.

Richera USB 2.0 Mini Microphone "Makio" Mic for Laptop

rgds

Richard
[MTCD  Android Head Units Q&A] s.rahus:
Not sure what else we can try. f1x is someone who has developed the fix for the echo during phone calls issue on the previous generation head units. May be he can find a way/app to make microphone work outside of Bluetooth app. I have send a PM to him, anyway.

Cheers,

Rahul U S
[MTCD  Android Head Units Q&A] marchnz:
From a review of the MTCD schematics, appears that the units which have an integrated BT/WIFI chip have a single MIC (labelled on the schematic as MIC2) that is connected to the SOM/controlled by Android - suggest that these units work 100% between Android and BT.

Some units with external BT module appear to have a mic shared between the BT and android (labelled as MIC1)or have separate MICs (external and internal) mics that must be connected. The MCU controls MIC power in either scenarios but has no other control. It might be possible that the MIC supply is only toggled ON when BT is enabled (MCU code defect or incorrect factory Options set)

For the units where the MIC audio is not shared with Android, like these XRC units, I would suggest checking to see if there is a defect and if not, resolve by hardware modification (also see MTCB MIC/BT thread) options, in order:

First check that the MCU factory settings are being correctly set. Attention to BT module setting.

Validate if the MIC Powersupply is only being enabled when BT is enabled/in-call (if only enabled when in BT call, permanently force

ON

by mod or see last suggested option)

Check if MIC1 is electrically shared between Android (SOM MIC2) and BT module (MIC1) by continuity/tracing MIC circuit to determine if there is a hardware issue/defect of the MIC connections to the SOM (MIC2)

Isolating the MIC inputs to the SOM (MIC2) and connecting a MIC to SOM, feeding power to MIC per onboard MIC supply

Note, use the WITSON and GS schematics (tread link in my signature) to check/modify your unit.

Good luck!
[MTCD  Android Head Units Q&A] s.rahus:
Wow! Thanks for the detailed explanation!

"Validate if the MIC Powersupply is only being enabled when BT is enabled/in-call (if only enabled when in BT call, permanently force ON by mod or see last suggested option)" - Is there a terminal command to check this? Can we force this to always ON via terminal?

Cheers,

Rahul U S
[MTCD  Android Head Units Q&A] rasnicop:
I want to know this too! Thanks.
[MTCD  Android Head Units Q&A] s.rahus:
I googled, couldn't find anything that worked :(

Cheers,

Rahul U S
[MTCD  Android Head Units Q&A] marchnz:
First step would be to check with a voltmeter that the mic has bias/supply first when BT is on as a baseline and then when using google voice search.

Expect 1.5v - 3v DC at the mic.

Use the schematics in my signature for further investigation or mod.
[MTCD  Android Head Units Q&A] e_izdo:
Hello, recently bought a radio with mcu mcte xrc v.2.72.1 and it works ok google without external micro and bt model 725. Sorry for my English.
[MTCD  Android Head Units Q&A] sev:
Same for me. I have a MTCE XRC unit with mcu versio 2.72 using the 725 chipset for Bluetooth. Microphone works just fine with google apps.

BUT on my unit ad2p is distorted and sounds horrible.
[MTCD  Android Head Units Q&A] s.rahus:
How's the Bluetooth call quality? Any distortion or echo during phone calls?

By the way the issue is with Bluetooth chip SD-968 only.

Cheers,

Rahul U S
[MTCD  Android Head Units Q&A] s.rahus:
Anybody managed to fix this one? Any progress made?

Cheers,

Rahul U S
[MTCD  Android Head Units Q&A] sev:
pretty terrible :(
[MTCD  Android Head Units Q&A] s.rahus:
Okay. 725 is known to have poor Bluetooth call quality. There are fixes available for Bluetooth echo for example, in XDA.

I have to admit that with SD-968, the Bluetooth call quality is flawless.

Cheers,

Rahul U S
[MTCD  Android Head Units Q&A] twist:
Just FYI, I replaced my PX3 with a new PX5 system and the mic works perfect, OK Google, everything. It is such a nice change, as my old unit was just missing that feature to make it really complete.
[MTCD  Android Head Units Q&A] s.rahus:
[MENTION=456516]typos1[/MENTION] had made the same observation few months ago. This is weird though. So its not the mainboard (XRC_MTCD/E) that is causing the issue. How is the connection from mainboard to coreboard (PX3/PX5) different for PX3 and PX5? Will you be able to analyze and figure it out, please?

Cheers,

Rahul U S
[MTCD  Android Head Units Q&A] kiru:
Are you able to share where you got the PX5 board from? Interested in doing the same thing.
[MTCD  Android Head Units Q&A] twist:
I bought a whole new head unit and its car specific, I can gladly send you a link to the Ali vendor, but I do not know if they would have what you need.
[MTCD  Android Head Units Q&A] s.rahus:
[MENTION=283410]twist[/MENTION], please share the link. Can you also provide the MCU details and the Bluetooth chip details of your new PX5 unit, please?

So as the unit has a fully working mic, how is the call quality via Bluetooth?

Cheers,

Rahul U S
[MTCD  Android Head Units Q&A] typos1:
Upgrading to a PX5 board will make your mic work.
[MTCD  Android Head Units Q&A] twist:
It sounds good for a cheap built in mic. I bought a nicer external I am going to hookup and run to the headliner area. Will have to test it once it comes tomorrow.

Here is the link of the exact unit I bought.

https://www.aliexpress.com/item/4G-...32846681023.html?spm=a2g0s.9042311.0.0.WWUuAE

It is really snappy too. I am running Malaysk rom on it BTW.
[MTCD  Android Head Units Q&A] s.rahus:
How the BT call quality after hooking up the external mic? By the way, can you please let us know the MCU and the BT chip you have?

Cheers,

Rahul U S
[MTCD  Android Head Units Q&A] sev:
can the SD-968 be purchased in USB form? I want to switch from my md725, which sounds horrible for a2dp to SD-968. I dont care about using the mic in other apps.
[MTCD  Android Head Units Q&A] costinradu:
Hello. Did you have the latest MCU update for XRC? I need it badly :)
[MTCD  Android Head Units Q&A] sev:
https://yadi.sk/d/umCvHqCDzHccr/All dmcu for PX3, PX5, Intel Sofia3g/XRC

2.84 is the latest. It doesnt fix anything with bluetooth.
[MTCD  Android Head Units Q&A] rasnicop:
[MENTION=2101556]costinradu[/MENTION]

Hi, please, can you help me?

I have a MTCD with this characteristics:

Model: PX3 Android 7.1.2 Quadcore

MCU Version: MTCD_XRC_V2.60_1

Can I update to 2.84 ROM in the XRC folder?

In this case, I want to know too if it's possible to root the device with this ROM.

Thank you so much!
[MTCD  Android Head Units Q&A] typos1:
"2.84" refers to the MCU not the ROM.

This thread is about the microphone not working issue, not rooting and updates, there are specific threads for those subjects.
[MTCD  Android Head Units Q&A] BeerAndPies:
OK Google - Limited Functionality

I couldn't get OK Google functionality to work on my car head unit as the microphone only works for bluetooth calls in my head unit.

SD-968 same problem.

I bought a Google Home Mini and run this off USB power from my car. I have a Wifi Hotspot device powered by a USB slot from the car, also with a SIM card for data which is used by both the car head unit and the Google Home Mini.

Using IFTTT you can use a ' Google Assistant' item within the IF part of an applet and intercept voice commands given to the Google Home mini. Use 'say a phrase with a text ingredient'. Use the dollar symbol to specify a variable in the IF part of the applet for example I use 'Navigate to $'. In the THEN part of the applet there are 'Android Device' actions you can use such as launching Google maps with a variable using 'add ingredient' to get {{TextField}} which represents the dollar variable value from the 'navigate to' command you gave. The Android actions require the IFTTT app running on your Android head unit. The actions seem to run on all devices which have the IFTTT app running.

This is the solution with the least moving parts I have come up with so far and I use it for playing music or navigating which is all I need generally. You may be able to interact more generally using Tasker or equivalent or sending commands directly to Google Assistant. I haven't been successful with these and am happy I can get directions and play music. The Google Home mini can also make WiFi calls to phones itself directly. In the IF part of the applet you can choose a spoken response such as 'sent to car' so you know when it has been recognised.

The IFTTT app/service might get killed off by your head unit closing down or sleeping.. I think the Automagic app on Android will allow me to start apps such as IFTTT and Spotify when the screen is turned on so it all works without having to start anything manually; the task manager on my head unit is quite aggressive and kills most apps designed to start things upon boot. I removed the IFTT app from battery optimisations, and tried an app, AutoStart, which tries to launch IFTTT after boot. I am unsure about Google Assistant itself on the head unit as it won't launch saying it isn't compatible which I believe is because of the screen resolution being too low, but I don't have root.

I wasn't able to connect the Google Home mini to use the car head unit as an external speaker for some reason it won't connect, but I can tell the Google Home mini to play music and it is sent to Spotify so that's fine for my use. You can probably send text messages with IFTTT too but it looks like you would need to set up each individual contact phone number per applet.
[MTCD  Android Head Units Q&A] rasnicop:
Ohhh! Sorry for my ignorance. Perfect, thanks!
[MTCD  Android Head Units Q&A] vesangi sp:
Hi friends I got the problem

It's not MCU or Hardware problem,

It is software problem(firmware)

I installed old stock firmware, it's working

My MCU MTCD_XRC_2.60

BLUETOOTH SD968

Sorry friends for my english

If all of your problem solved I am happy

---------- Post added at 06:51 PM ---------- Previous post was at 06:20 PM ----------

Try this link

https://yadi.sk/d/umCvHqCDzHccr

In that link install PUMPKIN Firmware

(04 september 2017.rar)

Mic is perfectly working with sd-968

Bluetooth, But how it's working I don't know

Only in that firmware my head unit mic is working

Perfectly
[MTCD  Android Head Units Q&A] Flyingcharly2a:
Hello,

Just to add something maybe new to the thread.

My unit is not xrc but

I am on Malaysk's Rom and mic works with OK Google. Kind of. When it wakes up from deep sleep same issue as everyone here. I need to reboot it to make it work.

I use external mic.

My MCU : MTCE_ZH_2.75e_1 BT : SD968

Hope it can help someone to solve this issue.

I ordered a 725 Bluetooth donle. Will try it in a couple of weeks

Cheers
[MTCD  Android Head Units Q&A] Flyingcharly2a:
Just a question to those who have the Comfast Bluetooth dongle.

Did you manage to connect to your HU something other than a phone and can you have 2 or more devices connected at the same time?

Thanks
[MTCD  Android Head Units Q&A] dbenet:
It didn't worked for me :(

Do you have an XRC Unit?
[MTCD  Android Head Units Q&A] rasnicop:
Deleted

---------- Post added at 11:49 PM ---------- Previous post was at 11:47 PM ----------

Wow! I have the same MCU, anybody had test the ROM installation?

I don't see the pumpkin folder, can you tell me where is?

Thanks
[MTCD  Android Head Units Q&A] dbenet:
Inside the "RockChip PX3 Android 7.1" you will find the "Pumpkin 04 September 2017.rar" but i installed it and didn't worked for me (same mic issue).
[MTCD  Android Head Units Q&A] s.rahus:
Did this ROM fix the microphone issue for you?
[MTCD  Android Head Units Q&A] rasnicop:
Finally, I havent tested it. Sorry.
[MTCD  Android Head Units Q&A] f465gt:
I would like to add, that on the S160 head unit the internal mic was routed to the Android part, but the external one wasn't. To achieve this you had to remove/disconnect the internal mic and wire the external mic to these pins. On the mic jack there are several pins where it all comes together. I assume it is the same story with the MTC PX3 PX5 head units.

Here is the hardware mod on roadnav.com/forum (https://www.roadnav.com/forum/modif...ok-goggle-is-not-working-or-has-very-low-gain)

If there is any other solution please let me know.
[MTCD  Android Head Units Q&A] typos1:
Pretty sure MTCD/E units are the same as MTCB/C units in that both mics are wired together.
[MTCD  Android Head Units Q&A] f465gt:
There are some threads linked in the Wiki (https://xdaforums.com/wiki/Hui_Fei_Type#Hardware) but due to the style of the thread I am not able to determine the head-unit that was modified. You were in some other threads involved as well, regarding the C32 capacitor. But I am not sure if this was on an older MTCB unit.
[MTCD  Android Head Units Q&A] rasnicop:
Hi all, I have seen a dongle to activate Carplay or Android Auto on Android headunits. URL: https://es.aliexpress.com/premium/c...nel=ppc&SortType=price_asc&page=1&groupsort=1

Actually, my microphone doesn't work with command voices. I want to know if with this dongle, the headunit's microphone will work. Anyone knows?
[Honor 9  Guides, News, & Discussion] OldDroid:
B170 (23.10.17) is now available on HWFF (OTA-MF, FullOTA-MF) for C10, C185, C432, C635.

Changelog:

This update optimizes system performance and stability.

[Optimizations]

Optimizes power consumption for longer usage.
Improves system performance and stability for smoother operations.
Optimizes the wallpaper display for a better experience.

[Fixes]

Fixes an issue where the other party's voice was occasionally delayed when answering calls while using OK Google.

Update notes:

1. This update will not erase your personal data, but we recommend that you back up any important data before updating.
2. The system will restart after the update. This will take about 5 minutes.
3. If you experience any issues during the update, please call the Huawei customer service hotline or visit an authorized Huawei service center for assistance.

FW is not approved for me, but i will try installing it as soon as i'm home.

Regards
[Honor 9  Guides, News, & Discussion] Pa-Jo:
I have tried to install this update via FF but firmware was not approved for installation so we need to wait some time since Huawei will release it for public.
[Honor 9  Guides, News, & Discussion] 4r44444:
In a German Forum some people claimed they were able to install the Firmware... Anybody else?
[Honor 9  Guides, News, & Discussion] OldDroid:
German here aswell, i was able to install it.

Regards
[Honor 9  Guides, News, & Discussion] pijes:
how did you install it?
[Honor 9  Guides, News, & Discussion] marko958:
Here's also Germany, I'm not able to install it as it's not approved.

Gesendet von meinem STF-L09 mit Tapatalk
[Honor 9  Guides, News, & Discussion] 4r44444:
How you forced to update to B170?
[Honor 9  Guides, News, & Discussion] OldDroid:
not approved and installable are 2 different things ^^

nocheck recoveries and custom recovery commands
[Honor 9  Guides, News, & Discussion] tinnef:
So... what recoveries and which custom recovery commands did you use to update?
[Honor 9  Guides, News, & Discussion] OldDroid:
NoCheck recoveries can be found in the rebranding tutorial - HWOTA.zip.

for the custom recovery commands i refer to my AIO guide for the Honor 8 Pro, its clearly explained there - Part 3 (Updating to unapproved OTAs).

Regards