yashsingh1/xdaforums huggingface dataset:
[Samsung Galaxy Note 8 Themes, Apps, and Mods] kunal2998:
Currently i have mapped single click bixby button to shortcutter quick settings app ( side bar) ( photo attached) which is very handy to use frequent apps. Long press bixby button mapped to open camera.

If i could get any solution to map the Edge Panel then it would be awesome as i would remove shortcutter app
[MTCD Hardware Development] marchnz:
Type 1 and type 2 MD725 module swap for working bluetooth on Oreo.

Summary is that I have confirmed there are two versions of this module.

Using Type ONE (GOC-MD-725) module, I can now upgrade my PX5 to Oreo and have working BlueTooth (29/06/2020 - Users reporting MD725 Type one not working On Android 10 either.)

Get genuine MD725 Type 1 (GOC-MD-725) Here: https://www.aliexpress.com/item/32953209958.html

Updated: 29/06/2020 - Link to obtain an GOC-MD725 'Type 1'.
[MTCD Hardware Development] sev:
subcribed!
[MTCD Hardware Development] rootgremlin:
are all oreo roms affected

so i am new in the Android HU business and started with a MTCE PX5 4GB/32GB HU with Android 8.

Except for my Phone A2DP, Adressbook and Phonecalls, I can not facilitate BT for anything else.

Is this common for all Oreo-Roms?

or is it a Hardware-Limitation.

I would like to use my Phone's LTE Network over BT-Tethering for the HUs Internetaccess, and connect the OBD2 Adapter to the Android System.

Could all this be done with a MD725 BT Module? If so, where can i Find one, Has it some kind of Product-code? as my googling for the Chip does no find a product i can buy.
[MTCD Hardware Development] marchnz:
Software limitation. Common all MTCB and MTCD.
[MTCD Hardware Development] rootgremlin:
all MTCx Hardware, ok! also all Android versions? so also for Android 5,6 and 7? Because i could care less if it is oreo or not, i want to use this damn things Bluetooth connectivity.

If BT is working on older Software, can i downgrade the ROM to an older Software, if it was delivered with oreo?
[MTCD Hardware Development] roverto:
PX5 to Oreo working BlueTooth. whether UM02WBS-8723BU-V1.2
[MTCD Hardware Development] marchnz:
No, must be GOC.
[MTCD Hardware Development] ishyesh:
Have a link from where to buy?
[MTCD Hardware Development] zeyret:
The module in the picture does not work.wireless is working but BT is not working.

https://xdaforums.com/showpost.php?p=76989030&postcount=1427
[MTCD Hardware Development] marchnz:
I brought a complete GS mainboard to obtain the a type 1 (GOC).
[MTCD Hardware Development] JonatanP:
I think it's something that manufacturers could have solved long ago... :/
[MTCD Hardware Development] ishyesh:
I'm not trying to be lazy, but would you happen to have a link to the one you bought? I've been fruitlessly scouring the usual sources for an actual type 1 module.
[MTCD Hardware Development] marchnz:
Hi, I brought the board from Xtrons support. I don't have a link, sorry or the model code for the board.
[MTCD Hardware Development] JonatanP:
[MENTION=4974080]marchnz[/MENTION] Will not there be any other option that fix the bluetooth on Android 8?

I installed android 6 but it is not so fluid
[MTCD Hardware Development] imran0487:
as far as i know, MD725 type 2 doesn't work with Oreo.
[MTCD Hardware Development] marchnz:
that's right, should read type ONE, thanks, updated.
[MTCD Hardware Development] imran0487:
is there is any update regarding the swap? in your first post you attached 3 pics of the modules, can you tell me which module is type 1 and type 2.
[MTCD Hardware Development] jimimatthews:
Would this module work?

https://www.aliexpress.com/item/RTL...U-V1-2-13-4-12-2mm-WIFI-GSPI/32471521628.html

---------- Post added at 03:30 PM ---------- Previous post was at 03:26 PM ----------

Type 1 is the white one and Type 2 is the dark one (both in the first image).
[MTCD Hardware Development] zeyret:
I ordered this module and I'm waiting for delivery.I'il write down the test results.

https://es.aliexpress.com/item/RTL8...&terminal_id=501ff62c603a46afa3ee14986a7c7404

This module I received did not work with Bluetooth.

https://es.aliexpress.com/store/pro...?spm=a219c.12010612.8148356.15.38de2340sLP2Ob

---------- Post added at 10:51 PM ---------- Previous post was at 10:49 PM ----------

This is the original module.

https://es.aliexpress.com/store/pro...l?spm=a219c.12010612.8148356.1.1fdd2340Fi83pV
[MTCD Hardware Development] TT_Vert:
I think you may be wrong on that. I have one that looks very similar to that dark one and it's a type 1

127|px5:/ $ getprop bt.md725.type
1
[MTCD Hardware Development] Jaconator6:
Yep, my bad.
[MTCD Hardware Development] zeyret:
The production of this module has been stopped.They couldn't send it to me.

I bought the module on the connection, and it didn't work. version v 1.0

https://www.aliexpress.com/store/pr...ml?spm=2114.12010612.8148356.4.1e982340b6lW5C

---------- Post added at 06:33 PM ---------- Previous post was at 06:32 PM ----------

Original module in this V2 too

https://www.aliexpress.com/store/pr...ml?spm=2114.12010612.8148356.1.1e982340yaPtnL
[MTCD Hardware Development] TT_Vert:
Strangely my type 1 looks nothing like either one of those.
[MTCD Hardware Development] The.Raven01:
And as it is, you can upload a photo please. I have also received one that does not work and I want to find another alternative.

Enviado desde mi SM-G935F mediante Tapatalk
[MTCD Hardware Development] TT_Vert:
post #20 here
[MTCD Hardware Development] The.Raven01:
Thanks, I saw her ...

Enviado desde mi SM-G935F mediante Tapatalk
[MTCD Hardware Development] zeyret:
This link:

https://www.aliexpress.com/store/pr...ml?spm=2114.12010615.8148356.2.30c26937LVtMrP
[MTCD Hardware Development] marchnz:
Hi,

Thanks for that - this looks to be the correct module! Thanks.
[MTCD Hardware Development] imran0487:
mate, please update us once you install it in your unit.
[MTCD Hardware Development] marchnz:
I have the correct goc-md725 in my unit (i am OP). Did you want to let us know your results?
[MTCD Hardware Development] zeyret:
I bought it,I write the result
[MTCD Hardware Development] The.Raven01:
Order... and with this go 4 already ...

I hope it is the final ... thank you...

Enviado desde mi SM-G935F mediante Tapatalk
[MTCD Hardware Development] justice4eire:
just ordered the GOC BT board, Hope it works as I want to have my HU on Android 8.0

Confirmed with the supplier that its the GOC 725 chip so this should be a Type 1 and this should solve the issue with upgrading to OREO Whoooo!!!
[MTCD Hardware Development] Matrix1990:
Hi guys,

I have the similar problem with my px5 unit:

something is connecting to bluetooth , somethimes is not... and i have to reboot the deveice 10+ times to work.

My model is:

px5(1024x600)

Android version

8.0.0

Android security patch level:

October 5,2017

Kerlen Version

4.4.93+

rocky@hctr930 #326

Thu Jul 5 22:23:53 CST 2018

Build number:

px5-userdebug 8.0.0 opr5.170623.007 eng.hct.20180706.161540 test-keys

Mcu Version:

MTCE_XRC_V2.89_1

jul 6 2018 16:55:36

Cpu:

8 core 64-bit Cpu Cortex - A 53@ 1.5 G

Memory

3891 MB

Bluetooth modul name from (car factory settings)

BT MD725

please guide me what I have to buy what chip to work, I'm planning to buy this one:

https://www.ebay.com/itm/RTL8723BU-...uetooth-Module-Original-and-New-/153097392828

please tell me if I can order that or do I have to change my navigation :(?

thanks in advance!:good::good::good::good::good:
[MTCD Hardware Development] zeyret:
Ha 24-11-2018 OREO firmware recognized it MD725 but the sound did not work.
[MTCD Hardware Development] ishyesh:
Were you able to pair?
[MTCD Hardware Development] zeyret:
The phone finds the unit and connects with the Mirror Link, but the unit does not see the phone.
[MTCD Hardware Development] jimimatthews:
This is the module I received from the link. Can confirm that it is the GOC module, I will write back when I have it installed in my PX5 unit.

[IMG="MD725 GOC"]https://i.imgur.com/gAYIsM1.jpg[/IMG]
[MTCD Hardware Development] zeyret:
I ordered.I will write back when I have it installed in my PX5 unit.My order hasn't arrived yet.
[MTCD Hardware Development] jimimatthews:
I'm having issues desoldering the old MD725 chip, it appears that it is glued to the board and I don't have a hot air setup.
[MTCD Hardware Development] imran0487:
try hair dryer, may be it will help
[MTCD Hardware Development] julien_blanche:
I have completed the process and i can tell that it is working...

-Heat up the 7 legs with solder gun and then gently lift up the old chip with a razor blade ( It is not glued to board, just gently push the razor blade between the chip and board)

-After that i have soldered the new chip to the board and booted up the head unit.

-Now we have Android 8 with working Bluetooth.

My order was from https://www.aliexpress.com/item/RTL8723BU-WIFI-Bluetooth-Module-Version-MD725-for-PX5-Android-8-0-Oreo-RTL-8723BU-V2-1/32953209958.html?spm=a2g0s.9042311.0.0.a6db4c4dREV3HT
[MTCD Hardware Development] jimimatthews:
Forgot to write back. I used a hair dryer and the solder gun and tweezers to get the old chip off. New MD725 chip is soldered on and now Bluetooth works beautifully in Android 8.0 for me too.
[MTCD Hardware Development] ishyesh:
I can confirm the referenced Bluetooth module worked for me also on Malysk 7 and 8
[MTCD Hardware Development] markgeary:
HI,

so mine arrived today... i soldered it in place and upgraded to android 8.

No bluetooth or wifi.

Can anyone send a pic of what you have done? Wondering if the pin outs are correct for my board or something like that.
[MTCD Hardware Development] ishyesh:
I did not take pictures, but did the module work on Android 7?

If the change from Android 7 to 8 correlated with the module not working, ignoring any physical changes or potentially solder joint breaking movements, the problem may be in software.

If you suspect the problem is not in the software, I'd solder all the possible pads that can be in contact with the module. I think I had to solder 7 points. One can not rule out a faulty chip or one that got damaged during soldering or (accidental) damage to the board.

What do you think the most likely candidate is? Post logs if possible
[MTCD Hardware Development] markgeary:
Totally agree.. I soldered it on when i was on Android 6. It didn't work so i thought it might be software and upgraded it to 8.

It still didn't work and therefore i resoldered all the connections to make sure there wasn't any issues.

I also have a MD725 usb wireless dongle - This works in Android 8 (just the bluetooth does not). So i am going to rule out software as the issue and maybe i got a faulty chip.

I shall order another one (just takes so bloody long to get here).

If i work anything out - ill post the results for others.
[MTCD Hardware Development] ishyesh:
I can mail you the extra I got (for free). I live in Ann Arbor, Michigan, USA. I suspect you may be in UK by your uage of "bloody" :)
[MTCD Hardware Development] zeyret:
I motioned this module into my unit and it worked. Droid 8.0 also works fine

https://www.aliexpress.com/store/pr...ml?spm=2114.12010612.8148356.8.6456cd11Eu3ZJh
[MTCD Hardware Development] Nomader0:
do these units have the lag/echo when talking over the phone like the old md725 has?
[MTCD Hardware Development] markgeary:
That's very kind of you!

Yes I live i the UK - I am actually South African but I have to fit in somehow haha

I have already ordered another chip from Ali - but thank you!
[MTCD Hardware Development] zeyret:
Everything is working properly.
[MTCD Hardware Development] julien_blanche:
After the modelu change I realized one thing that bluetooth and wifi are not working at the same time. If I turn on wifi while bluetooth is not paired then its ok and wifi is very fast. If i pair my phone with bluetooth and do a wifi speed test then wifi speed dramatically drops from 20mpbs to 0.2 mpbs and not usable. Whenever I unpair my phone wifi become normal and fast.

I have tested same conditions with PX3 board on my hand and problem gone. So we can assume this is software related ?

Somehow oreo restraining the wifi performance while bluetooh is active? [MENTION=4974080]marchnz[/MENTION] do you know anything about this ?
[MTCD Hardware Development] techo91:
I see that on this modules the WiFi and Bluetooth are on the same antenna, I wouldn't expect a good speed when both are connected. The same 2,4 GHz radios on the same wire? It will never work good. Since I'm in the same boat, I really want to solve this issue the best way possible. I think if we choose another board, we will have better results.
[MTCD Hardware Development] typos1:
Is there another antenna port on it ? If so you could solder on another antenna.
[MTCD Hardware Development] techo91:
Hi typos1, off course you can, but all the sellers selling this board say that only one antenna is used for both. I'm trying to find out what is the truth.
[MTCD Hardware Development] julien_blanche:
When I opened head unit I realized that there are 2 antenna solder points which one of them is soldered to a bare wire. I have soldered another wire and fitted to a wifi antenna. Both antenna solder joints meet at the end of data path where is same spot at the bluetooth module so it does not matter how many antenna been soldered cos module itself lack of ability to separate the channels.
[MTCD Hardware Development] techo91:
I ordered the module from ali and when it comes I will check how my unit is made. I think it will be the same. By swapping the module I hope to improve WiFi reception as well. Currently it's crap.

P.S.

On the block diagram you can see there are two antennas that can be used, there seams to be a diverse polarity switching IC responsible for switching between the two antennas depending of the packet destination.

I understand that if we connect only one antenna this switching IC will not use the second antenna input.
[MTCD Hardware Development] zeyret:
There are two separate antennas on the module. BT and wireless.
[MTCD Hardware Development] marchnz:
Module can be factory configured for dual or single antenna. The GOC-MD725 I have are configured for single antenna.
[MTCD Hardware Development] techo91:
How do you recognize which one is used?
[MTCD Hardware Development] abagos:
I have installed the module today and Bluetooth works very well. However I now have a problem with WiFi. I use hotspot on my phone and connect with my headunit. If both WiFi and Bluetooth are connected, WiFi drops in Spotify and YouTube. Other functions seem to be ok, but in Spotify it disconnects and reconnects constantly.

Any idea?
[MTCD Hardware Development] abagos:
To answer my own question, this doesn't seem to be a hardware problem, rather an Android 8 problem, because my phone (a Nokia 6) which runs stock Android 8.1 exhibits similar symptoms. I can work around it by using WiFi Direct (this creates a pairing between the the two devices). This needs an additional application to do the Internet proxying (I use Net Share). When I do that, both WiFi and Bluetooth run without a problem. I therefore believe it has something to do with the network stack, probably not unrelated to the specific implementation of having both WiFi and Bluetooth on the same chip.

My phone has a problem when using HotSpot and Bluetooth. When a call is made or received, Bluetooth drops and it can only recover with a reboot. By using the method with WiFi Direct (which uses WiFi but not the native HotSpot) it works fine, Bluetooth does not brake. The only side effect (on the headunit with Android 6) was that GPS was not functioning properly, it wouldn't lock a location (!?). I am now on Android 8 on the headunit (Hal9k ROM) and GPS seems to work ok so far.

A.
[MTCD Hardware Development] markgeary:
Does anyone have the pin out for the ali express module? I plan to not solder it to the board and rather make it into a usb dongle. (so the antenna is placed better).

Since the chip is just a usb chip anyway.

Thanks
[MTCD Hardware Development] techo91:
Take a look here: https://xdaforums.com/showpost.php?p=73375710&postcount=6

Edit:

I swapped the module also and finally I have Bluetooth in 8.0. All works good now. Keep in mild that when the Bluetooth and WiFi are connected at the same time the WiFi connection speed drops to around 5-6 Mb/s from 50. If you disconnect Bluetooth WiFi connection goes back to normal. I have both antennas connected, but I see no difference.
[MTCD Hardware Development] abagos:
Isn't there any solution to this problem? I am experiencing the same and it even disconnects during downloads (e.g. an application update).

Thanks,

A.
[MTCD Hardware Development] techo91:
I don’t think that there is. I think it’s just because the way the chip itself is designed.

Best option for me would be to put another chip, but I have no time to investigate and find a better one.
[MTCD Hardware Development] abagos:
Thanks. Do units which have this chip originally suffer from this behavior? Because mine is retrofit (to be able to install Android 8).

The old chip didn't suffer from this on an Android 6. I haven't tested this one with 6 unfortunately, I had already upgraded to 8.

A.
[MTCD Hardware Development] techo91:
I don’t remember to have this on the old board. Would be nice to know other people’s experience too.

For me most important is to solve the crappy microphone sound when I am using the hands free Bluetooth calls.
[MTCD Hardware Development] reverendhtc:
If using this board/chip combo on Android 6 there is no issue. Bluetooth and Wi-Fi can be used at the same time at normal speeds.

This issue only occurs with Android 8 due to some missing drivers (If I understand correctly).

For this reason I have reverted back to Android 6 until I hear of a permanent fix without modding or replacing boards.
[MTCD Hardware Development] techo91:
The issue with the missing drivers is when the Bluetooth is not even recognized. If your Bluetooth works in 8.0 you don’t have the issue. Waiting for someone to resolve it is not very effective as I see that not many people have it and the ones that do, don’t want to mess with it.
[MTCD Hardware Development] reverendhtc:
I agree. I don't expect any solution for the missing driver and thus I downgraded, as my Bluetooth is not recognised in Android 8.
[MTCD Hardware Development] Tractile:
is it possible to use a usb-bluetooth adapter like this?

https://www.ebay.de/p/FINOO-USB-2-0-Bluetooth-V4-0-Adapter/1452621466?iid=263774976913&chn=ps
[MTCD Hardware Development] imran0487:
finally..i swapped the type 2 with type 1..its working great
[MTCD Hardware Development] An92:
Good morning guys, I have a question to ask ..

I have a unit px3 2gb eonon mcu www (it would be klyde, in fact I have on his mcu)

https://drive.google.com/file/d/1-HAPtfltBgqDytSNWjR1YWo6BxjuA4Vc/view?usp=drivesdk

.. I saw the images of bluetooth modules but mine is a little different ...

Image 1 /// chip realteck RTL8188ETV

https://drive.google.com/file/d/123JyJ41Kdaqui24njtv0Vpyh3PWLoeqQ/view?usp=drivesdk

I then have another motherboard from my unit (it broke and the seller sent me a new one, which I have now mounted) ... Well that broken motherboard has the bluetooth chip you buy, the version new compatible with Px5 .. Image 2/// CHIP REALTEK 8723BU

https://drive.google.com/file/d/11op0h4NFZ5PpSmmltgAakTE1HdhQzQza/view?usp=drivesdk

Can I detach the chip from the broken 2 card and put in my chip which is different ?? The motherboards are almost identical with some small resistance and a large green connected differently ..
[MTCD Hardware Development] marchnz:
In first image, you have a separate BT module. We can't see if second board is the same without detailed images. I'd say if it works, leave it as is.
[MTCD Hardware Development] An92:
Sorry for the quality .. If you ask for better photos I will give them to you .. However it is true, there is a separate bluetooth module, in fact I discovered on this thread that that small chip takes care of the wifi and Bluetooth .. But strangely I have these two modules .. And I would like to know if what I have now (second link) is compatible with upgrades from px3 to Px5, or if it is possible to exchange them, since the cards I have are very similar (always kld)
[MTCD Hardware Development] hubert.tpt:
Hello.

Whether or not this module will work with android 9 ?

https://www.aliexpress.com/item/RTL8723BU-WIFI-Bluetooth-Module-Version-MD725-for-PX5-Android-8-0-Oreo-RTL-8723BU-V2-1/32953209958.html?spm=a2g0s.9042311.0.0.a6db4c4dREV3HT
[MTCD Hardware Development] marchnz:
MD725, yes correct module Android 6,7,8 and 9 for MTCD and MTCE
[MTCD Hardware Development] radoslavsto:
BT problem

Unit: MTCE_MX, CPU Rockchip PX5 Cortex A53 OctaCore 1.5GHz + 2GB + 32GB. (Witson Multimedia W2 -B5762).

Replaced BT Module MD725 Type 2.

Android 8.0 is installed. Everything works fine except BT.

BT pairs with an Andoid phone and gives a phone book. There is no sound when making a phone connection, The called phone hears me.

On the other hand, the A2DP application normally operates and plays audio as well as EasyConnection

All this happens even with Android 6.0.1 installed.

Does anyone have a solution?

Greeting

Radoslav
[MTCD Hardware Development] radoslavsto:
Correction

BT modul GOC –MD-725 - V 2.1
[MTCD Hardware Development] donbrisko:
I consider changing the bt module aswell - primarely because I'm missing Bluetooth Low Energy (BLE) support.

Could someone please confirm that the MD725 is capable of BLE? You could just try a random BLE Scanner apk and try to connect to your smartwatch or whatever.

Thanks!

don
[MTCD Hardware Development] sev:
do both the v2.1 and v2.4 versions have the problem with wifi/bluetooth antennas?
[MTCD Hardware Development] marchnz:
I think I understand the question. The module that works is single antenna. From experience, diversity is not an issue.
[MTCD Hardware Development] techo91:
The problem that they have is when Bluetooth is connected the WiFi transfer speed drops dramatically, yes they both have it.
[MTCD Hardware Development] sev:
this is a super annoying problem. if i am using bluetooth, wifi completely cuts out
[MTCD Hardware Development] sev:
so i soldered on a wire, more or less the correct length as an antenna would be for 2.4ghz. I soldered it on pin 1 and 2, creating an antenna between those pins. Then on pin 3, i ran a single wire not routed to anything. These are the 3 pins on the opposite side of the USB connection.

I tested it out briefly in the car and my wifi signal improved significantly. I used to not be able to pick up the wifi at my house, but now i can see it. Also running bluetooth a2dp while connected to wifi didnt seem to effect anything

This is all preliminary, as I dont have time to test further yet. I will do some more testing over the next few weeks and report back. I'm using the md-725 v. 2.1
[MTCD Hardware Development] raptor_demon:
i swapped my type 2 module at the weekend to a type 1, i can see my phone via the BT but cannot pair or do anything else.

the terminal prompt is confirming its a type 1.

has anyone else run into this?
[MTCD Hardware Development] marchnz:
Post with full information.
[MTCD Hardware Development] raptor_demon:
its a MTCD_KGL_V1.87_1 with a px5 HIZPO branded that came with a PX3.

Kernel version 4.4.167

Running Android 9

the original md725 was a RL-UM02WRS-8723BU-V1.2

the new one is a GOC-MD-725 V2.4

wifi is working and there is only one antenna

my phone is an lg g8 running android 10
[MTCD Hardware Development] marchnz:
That's odd, have you checked that the correct BT type is set in factory settings?
[MTCD Hardware Development] raptor_demon:
yes, i tried changing it and changing it back too. I'm not sure what else i can check. half tempted to do a factory reset see if that helps the head unit. was just trying to avoid that.

other thought i had was that my chip was set to dual antennas, and the secondary antenna port on the md725 is grounded.
[MTCD Hardware Development] marchnz:
Factory resetus worth a try. If wifi is ok, diversity/antenna is not an issue. The version bt/wifi you have is single antenna. Crazy Chinese differences....