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Hi
I have a BMW X5 and a HTC HD2 with the newest ROM. When I enter the car, HD2 is recognised automatically by the car and I can place phonecalls dialing from my HD2. The only thing that does not work is that BMW tries to upload my phonebook from the phone but it does not get it. BMW says "please wait" - forever.
Before I flashed the ROM, this worked. Anyone has any ideas? I would even pay for someone in Zurich who comes and fixes this. One thing I could do of course is to downgrade my ROM again. But before I do this, I want to explore any other options.
Thanks a lot!
PS: jetwaremobile.com definately does NOT work on HD2
I have exactly the same issue. The HTC HD2 works ok for calls etc but the phone book upload is "please wait" forever. Very annoying. I have the standard up to date ROM and BMW X5 2009 model. Any help would be great.
Thanks
mrickenbach said:
Hi
I have a BMW X5 and a HTC HD2 with the newest ROM. When I enter the car, HD2 is recognised automatically by the car and I can place phonecalls dialing from my HD2. The only thing that does not work is that BMW tries to upload my phonebook from the phone but it does not get it. BMW says "please wait" - forever.
Before I flashed the ROM, this worked. Anyone has any ideas? I would even pay for someone in Zurich who comes and fixes this. One thing I could do of course is to downgrade my ROM again. But before I do this, I want to explore any other options.
Thanks a lot!
PS: jetwaremobile.com definately does NOT work on HD2
Click to expand...
Click to collapse
So any ideas? Now we are already two you can make happy! Thanks
Hey..
I don't have a BMW neither a bluetooth radio BUT i somewhere read in this forum, that there is a fix, to let the hd2 be recognized as normal phone
I know I'm not that much help , but I hope u can find the thread here good luck =)
HD2_Noob said:
Hey..
I don't have a BMW neither a bluetooth radio BUT i somewhere read in this forum, that there is a fix, to let the hd2 be recognized as normal phone
I know I'm not that much help , but I hope u can find the thread here good luck =)
Click to expand...
Click to collapse
I have a 2008 BMW, and I did experience this the first time..I sat there waiting for a few mins adn then got bored...but after I had turned the car off, been away and come back..it transferred straightaway.
Funnily enough, when I had my iphone (yes..sorry) I had the little image of the phone next to the BT signal on the display. I don't get this straight away with the HD2, but it always eventually appears..and then stays there until I hard reset my phone and do a ROM upgrade and then start the pairing again..where I just get the BT signal...then randomly..a few weeks later, the phone image appears again....very odd
Works fine here with a BMW 5x from 2008.. Using miris 6.5.x ROM
Funnily enough, when I had my iphone (yes..sorry) I had the little image of the phone next to the BT signal on the display. I don't get this straight away with the HD2, but it always eventually appears..and then stays there until I hard reset my phone and do a ROM upgrade and then start the pairing again..where I just get the BT signal...then randomly..a few weeks later, the phone image appears again....very odd
Click to expand...
Click to collapse
Hi, I also have a 2008 BMW (E93) and I do see the phone logo. It also syncs about 250 of my >3000 contacts. With my TyTN2 I used "Jetware Mobile" to sync just one dedicated category. But that doesn't work anymore with MinMo 6.5
schrej said:
Hi, I also have a 2008 BMW (E93) and I do see the phone logo. It also syncs about 250 of my >3000 contacts. With my TyTN2 I used "Jetware Mobile" to sync just one dedicated category. But that doesn't work anymore with MinMo 6.5
Click to expand...
Click to collapse
oh yes it does!
in fact, this is the only thing that works in Jetware with WM 6.5 - nothing else works in my case
i have a 2005 X5
bmw
i have a 2006 bmw X5 and the phone book works perfect so does everything else very happy )
zipolly said:
i have a 2006 bmw X5 and the phone book works perfect so does everything else very happy )
Click to expand...
Click to collapse
Which ROM do you use 1.66? or earlier? With my earlier ROM I had no problems, but since I upgraded to 1.66 (German), the phonebook does not transfer...
Bluetooth auto control problem
I can’t control my bluetooth (on/off) when using Inesoft phone profiles/controls; I have also tried other programs but no success(in another program the window of bluetooth was disabled); through all programs, I could control phone, WIFI, and gprs but not the Bluetooth. The only way to turn the Bluetooth on/ off is the Comm Manager (Manually); could anyone help please. Thanks
2006 bmw
I use the latest 1.66 wwe rom off t he htc website with no problems at all .
zipolly said:
I use the latest 1.66 wwe rom off t he htc website with no problems at all .
Click to expand...
Click to collapse
thank you, I am glad it worked for you...you must have a newer generation ULF than me then.
Is your phone HD2? mine is Toshiba TG01..I have managed to make it work 50/50 of the times, but I do not know WHAT CHANGES are between it working and not working...it is very frustating to know (and experience it working) that it can/should work, but not being able to
I have a new HTC Mini HD and have the same problems with my 2009 BMW 3. BT Headset function works just fine, but iDrive keeps trying to sync the telephone book, unsuccesfull. Instead, my phone's battery gets drained. Anyone any sollutions?
Unfortunately I don't have an answer for your question, but it sounds like it might have something to do with the bluetooth stack used for that ROM/Radio not being recognized by the car. Perhaps the layer that deals with data transfer is removed. Sorry I can't be of more help here.
What I can do to help is to offer a warning. I am a former BMW Client Advisor, and have been told many, many times by service technicians that using phones which are not specifically approved by BMW can affect your car's ECU (brain) and if it needs to be repaired or replaced, it will not be covered under warranty. That could be just nonsense to force you into buying only phones which BMW has tested (or vendors have paid for a marketing fee), or it might be spot on, in which case you run a pretty big risk.
Hope this helps.
OK, problem solved. BMW updated my carsoftware to its newest version last week and now my HD2 works perfectly with my car (again). I can make calls AND my phonebook is synced as well.
Hint1: Try if your phonebook sync problem exists with the SIM contacts as well as with the phone contacts
Hint 2: worldwideweb.bmw.com/com/de/owners/navigation/bluetooth/compatibility_check_intro.html
a_petrov303 said:
oh yes it does!
in fact, this is the only thing that works in Jetware with WM 6.5 - nothing else works in my case
i have a 2005 X5
Click to expand...
Click to collapse
zipolly said:
i have a 2006 bmw X5 and the phone book works perfect so does everything else very happy )
Click to expand...
Click to collapse
Hi All,
I have a BMW X5 2005 model. I can pair the phone OK but it constantly disconnects and reconnects once the transfer of the phonebook occurs. The phonebook transfers always start from scratch when this happens and nothing gets loaded to the car's phonebook.
If a call comes in, or if I make a call while it is connected (like within 5 seconds) the phone stays connected for the duration of the call.
I have tried all the Regisrty tweaks and none change the behaviour.
I also read it is because the HD2 uses Widcomm BT stack and not the MS BT Stack.
Zippolly and a_petrov303 and all those that have it working, can you please tell me which Rom you are using? I am using the latest Energy's 6.5.x rom. i noticed someone mentioned Miri's 6.5.x Rom works.
Thanks,
Rob
I have a 07 E60. The HD2 pairs fine, synchs contacts fine, but the sound quality is so bad it's not useable. Of course bmw says it's not a compatible phone, but I think there is a problem with the car as my Diamond won't find it, even though it is supposed to be supported
its mainly due to the car bluetooth, BMW etc don't make the car kit mostly siemens do and they are slow on the uptake of doing updates.
anybody found a snap-in for the hd2 yet?
I have a 7-series F01 and it is really annoying to have to deal with that usb cable...
Ontopic
I had the BT problem too, deleting the profile and repairing the phone did the trick for me...
Hey All,
I have been scouring the web in hopes of answers and can find none. Evidently I'm not the only EVO owner in this boat either. I own a 2011 Ford Explorer with Sync & MyFord Touch (Fully updated). I pair the phone to the car it makes the connection fine. Begins the setup and sometimes will even connect and be recognized for a bit. But then the phone drops the bluetooth headset part of the connection. It appears (but I can't confirm) that Bluetooth streaming audio is still connected. There was a blissful 3 day window where it all just worked. Then it went to hell...... I saw one post where it said to switch the Bluetooth name back to "PC36100" and that didn't help. I saw another that said use a 4 digit pairing code and that didn't help either.
Its worth noting that I'm running Myn's Warm 2.2 rls5 with the stock & fully updated HTC kernel. So here's what I'm hoping to figure out:
*Have you had this issue with ANY car?
*Have you had this issue with Ford SYNC/MyFord Touch
*Aside from unpairing & repairing were you able to get around it?
*Is there a Kernel with a better bluetooth stack I should try?
Thanks for any help, many thanks will be given!
Unfortunately, the HTC bluetooth is totally worthless. I have a 2010 Ford Focus with Sync and it would connect and sometimes work for awhile, but people on the other line always complained of poor quality. And it wouldn't even connect all the time either. Lots of deleting and readding the phone.
Couple weeks ago I switch to CM7. Since CM has a bluetooth stack they built themselves and actually implemented correctly, I haven't had any problems pairing my phone. I can make calls, stream music, gps, etc and it is all fine. Always connects too. What is nice also is the audio will automatically stop if Google Navigation is giving directions or if someone calls. When I shut my car off and open the door, the audio stops and when I get back in it automatically starts again where it left off.
Basically if you want to use your Evo with a Ford Sync system, you'll need to run a version of CM.
Arg. I'm still waiting on my Explorer
On my 08 Explorer with Sync and Myn's RLS4, all is good. I turn BT off and make sure it is on before I turn the key. I stream audio constantly, and talk a bit. I literally just got around to putting on RLS5 today, haven't driven yet.
I partially agree with teamgreen02. It's HTC, not Ford. Does texting work with CM7? That would push me over the edge (or Explorer, pun intended)
It seems that there are a bunch of phones that have issues maintaining connectivity with the latest Sync system. I had to re-pair a BlackBerry to an '11 Explorer this afternoon. There is a backwards pairing procedure that may help rectify your issue. If you try searching for your phone from the vehicle instead of searching for sync from your phone, it has, in my experience, minimised connection drops, especially on the latest versions of Sync...
Btw, I am like the only tech at my dealership who really understands how to even pair phones to Sync, let alone diagnose the concerns our customers have described. There is also a system compatibility chart that we reference to determine if a particular device has been tested and verified to work with certain features of Sync. Last I checked (the October 2010 update) the Evo still wasn't certified compatible/tested...
Sent from my PC36100 using XDA App
Does anyone have any updates on this? My wife's Sync is working fine with her Evo but the sound quality sucks when she calls. Her phone isn't rooted.
I did update the Sync software from v1 to 1.1 (She has a 2008 Ford Edge Limited) but need to do further updates to the system since there are updates available.
Here is my experience/.02.
My wife drives a 2011 Ford Edge with sync....she has a stock Evo4g. When she bought the car 2 months ago, bluetooth seemed to work fine...now she is having the exact same issues everyone else is having. The bluetooth connects/disconnects and just plain doesn't work. I attempted to fix it and.....no. If i unpair from both the car/phone then retry to connect them, it connects for a second and when it tries to send the phonebook from the phone to the car, the connection dies. The phone still displays that bluetooth audio (not phone) is connected.
I then tried my Evo 4g (CM7) on her car...no problems whatsoever. Sync'd and connected fine...phonebook transferred over in about 5 seconds and everything worked great.
To note, my Evo 4g also works perfectly on my 2011 Infiniti G37...
So I think my example further proves that HTC's bluetooth software is likely the causative agent and is likely junk....root or die i guess =p
hope this helps someone
I rooted and installed MIUI and dont have any problems yet with sync.
Although,
I was looking looking to pull the bluetooth stack of the droid X which has the MAP bluetooth profile, that will allow ford sync to read and write text messages for you.
any ideas on how to do this? Or where to find in in the droid X?
2010 Ford Focus here, works fine for me. Using Fresh 3.5.1.
The bluetooth stack should all be dependent on what kernel you are using on your rom, so if you already have it rooted, try to change kernels and see how it improves...
as far as the MAP profile, i found this thread in the Q&A section, and it also recommends pulling the MAP profile (for text messessaging) from the motorola droid kernels.
I wish i knew how to do this.
I was hoping for someone to be able to do this for us
EDIT: I also found this thread:
http://forum.xda-developers.com/showthread.php?t=741332
its trying to get the MAP profile into the nexus one...
they found the new bluez stack had the MAP profile included:
http://code.google.com/p/google-summer-of-code-2010-bluez/updates/list
I have not used sync in a long time in my 2010 escape, but I'm wondering if the text message function works as well. Any word on this?
Sent from my PC36100 using XDA Premium App
lawmangrant said:
I have not used sync in a long time in my 2010 escape, but I'm wondering if the text message function works as well. Any word on this?
Sent from my PC36100 using XDA Premium App
Click to expand...
Click to collapse
No, the text messaging does not work for the unrooted Evo and it doesn't work for a rooted Evo under Myn's Warm TwoPointTwo RL5.
I Just had a 2011 Explorer limited for the past week as a rental and it worked fine for me (music & calls). I know this does not help much hope you get it going.
i had my EVO running fresh 3.5 and worked great in my Escape, i just switched to twopointtwo ROM and now here i am looking for a solution, not sure if its the rom or the kernel since i switched both..
alexdogg said:
i had my EVO running fresh 3.5 and worked great in my Escape, i just switched to twopointtwo ROM and now here i am looking for a solution, not sure if its the rom or the kernel since i switched both..
Click to expand...
Click to collapse
got it working for a day but its disconnected again, im going to explain what i did hoping someone with more knowledge can help us SYNC users to connect bluetooth
used fresh EVO 3.5 for a while and worked great, then i got bored and changed rom to myn's warm 2.2 with the kernel included and bluetooth started disconnecting after 30 seconds or so...
i tried
ms79723's SBC for Netarchy's CFS More Aggressive 4.1.9.1 Kernel (v7)
Ziggy471 Warm TwoPointTwo RLS4 Kernel
they didnt work either... so heres the funny thing..
i wiped and reflashed a fresh version of the same rom (Myn´s warm 2.2), this time i didnt restore anything, no apps, no contacts, anything, left it clean.. then i paired it up and voila.. it worked for a long time in my ESCAPE, so i thought it was working and restored all my apps and data.. and to my frustration... its disconnecting again.
so does this have to do with the kernel or with some apps or what.
has anyone figured out how to get sync working with blue tooth messaging.
marcw2 said:
has anyone figured out how to get sync working with blue tooth messaging.
Click to expand...
Click to collapse
I don't think the android kernels have the message access protocol that is needed for this to work.
Sent from my HTC Evo 4G
2010 Ford Focus. Bluetooth sucked with stock ROM and warm, dropped connection all the time. Works great with CM7. Definitely an issue on the phone side and not the car in my case.
I am also wondering if we can somehow get the text messaging working. I don't think its officially supported on any Sprint phones.
2010 Moutaineer here - never had a problem with Bluetooth on rooted stock EVO ROM.
Listen to music all the time - even the "call-transfer" functionality works fine when I enter the vehicle while talking on the phone.
Only thing is - I wish the damned thing would auto-synch for media-audio on Aux1 instead of me having to select the source all the time - anyone know how to do this?
2010 Lincoln with mytouch/sync and rooted with stock rom. No problems at all. Sometimes it gets a little static sound but I just turn my Bluetooth off then back on.
Sent from my PC36100 using XDA App
Think the problem lies with the Sense BT stack.
Hey all,
Recently got my n4 and am currently running cm10 nightlies on it, but today I picked up our new car (Hyundai i30 premium) which has bluetooth built into the audio system and I can't get my n4 to sync with it properly. My partners Desire HD syncs no problems and all her contacts phone book everything shows up fine. My n4 wouldn't even sync originally then I just kept retrying and eventually it synced but nothing really works, music won't play through the speakers (the audio system just sits there waiting for music and nothing happens) my phonebook etc don't show up (after me allowing them permission) I can't even make calls.
I have heard that the n4 has some bluetooth problems but nothing this bad, anyone have any suggestions that I can try? Happy to go to another ROM if that will help??
Thanks,
Hosh
this build has serious BT issues. i can't even find a mouse that works. wait and see what the 4.2.2 update brings.
I own a Hyundai Elantra GT which is the US version of the i30 - I didn't seem to experience any issues when I paired it this morning, but I"ll double check when I get out of work this afternoon that the contact sync is working. I am, however, on the stock rom.
I own a 4 day old Dodge Journey and it pairs with no issue to Uconnect.
Try a different rom?
If thats not it, then its your hardware.
The new bluetooth stack in Android 4.2 is causing a lot of issues. Personally, I don't have any problems connecting to UConnect (Jeep Grand Cherokee) or my SmartMini (bluetooth music streaming).
I am waiting on delivery for my MetaWatch, there have been complaints that 4.2 isn't connecting well with it but I guess we'll see. CM10.1 users don't seem to have as many problems. I'm running Xylon w/ Franco r53.
I had the same problem with Chevrolet captiva until I have installed custom ROM and is working perfect now.I have tried every custom ROM and is OK with all.
I have this problem but there is a way around it (for me anyway).
Download Bluetooth file transfer from the market.
Delete the connections with your car. Both on the phone and your car.
Open Bluetooth file transfer. Select the Bluetooth screen.
Make a connection. The default android Bluetooth will ask for a password. Don't enter it. Instead go to your recent apps and select Bluetooth file transfer. Put the password in the request screen the app supplies.
Bluetooth file transfer should pair the devices and make a connection.
Once done. Kill Bluetooth file transfer as you won't be able to exit.
You can then uninstall Bluetooth file transfer if you want (although I tend to keep it for when I change ROMs or have to do a factory reset etc).
Hope this works for you
Sent from my Nexus 4 using xda premium
Hey all,
Sorry for the late reply, been away for the weekend. Thanks for all the advice, tried them all and no luck. Will try out a mates n4 tomorrow and see if he has any luck syncing with the car, if he does might just flash roms again.
after flashing a new rom, I had problems pairing w/bluetooth and connecting w/wi-fi. I fixed the problem by restoring my system settings w/titanium backup thanks to someone's suggestion.
Seems the only thing that worked for me is when it asks to sync my phonebook I have to say no, if I say yes it seems to freeze the whole thing. Makes me think if I click yes I might just need to give it 10-15 mins to sync, might try that tomorrow. But for the moment at least it's half working!
Have a stock unrooted N4 running the new 4,4,3.
Updated to 4,4,3 solely in the hope it would solve the bluetooth disconnects experienced. Note I did not have 'stuttering' or the like, just solid disconnects which would then auto reconnect in 30-60 sec unfortunately stopping my music app which would then need to be restarted and since I primarily use the BT on my bike or motorcycle it is obviously a pain ....
!!!!!!!!!!!! the update not only has not stopped the disconnects it has now introduced stuttering on occasion (not all the time) ....
Here's where I am at:
1. Live with it until Google finally realizes IT'S A PHONE not a camera or whatever and solves the BT problem or gets the BT folks to do it. (really can't believe they can't solve this or is it just an N4 problem?)
2. Root the phone, install TiBU, backup, wipe and install 4.4.3 factory images, reroot and recover stuff from TiBU ... all this in the hope the BT problem goes away ... chances of this?????
3. Give up and install CM which people say does not have this BT problem ... true??????
Thanks in advance to all for your help and opinions ..........
Could it be
Could it be the BT device itself? Does it work like a charm with other devices?
Electrospaz said:
Could it be the BT device itself? Does it work like a charm with other devices?
Click to expand...
Click to collapse
That's a great question and I am sorry I did not include the info in my original post ... the problem is evident with several different BT devices and these same BT devices work fine connected to other things ..... but not with the N4
zdrifter said:
That's a great question and I am sorry I did not include the info in my original post ... the problem is evident with several different BT devices and these same BT devices work fine connected to other things ..... but not with the N4
Click to expand...
Click to collapse
Has it always been stock? Perhaps your BT adapter in the device is faulty itself. I've ran two different headsets off of mine in the past year as well as connected to my PC and other phones with no issues at all. I've been rooted running beanstock right from day 1 though..
Electrospaz said:
Has it always been stock? Perhaps your BT adapter in the device is faulty itself. I've ran two different headsets off of mine in the past year as well as connected to my PC and other phones with no issues at all. I've been rooted running beanstock right from day 1 though..
Click to expand...
Click to collapse
Yup ... always stock ... when new on whatever version was current then (can't remember) did not have this problem and BT worked fine ........ when they went to the 'low power' BT solution it started.
Was really hoping this update would solve the disconnect problem.
Hi!
I have been running CM for years now. For the first time the nightlies aren't working good for me. The cm-11-20140804-NIGHTLY is working great, but as soon as I installed any of the newer my bluetooth starts disconnecting. For instance, the cm-11-20140817-NIGHTLY caused the phone to restart several times a day. It also caused the bluetooth to disconnect and the wifi acted very strange.
The latest rom I tried was cm-11-20140831-NIGHTLY. The bluetooth disconnected almost immediately and I went back to 0804.
Any ideas?
Thanks in advance!
// Anders
str3der said:
Hi!
I have been running CM for years now. For the first time the nightlies aren't working good for me. The cm-11-20140804-NIGHTLY is working great, but as soon as I installed any of the newer my bluetooth starts disconnecting. For instance, the cm-11-20140817-NIGHTLY caused the phone to restart several times a day. It also caused the bluetooth to disconnect and the wifi acted very strange.
The latest rom I tried was cm-11-20140831-NIGHTLY. The bluetooth disconnected almost immediately and I went back to 0804.
Any ideas?
Thanks in advance!
// Anders
Click to expand...
Click to collapse
Hi,
I've made similar discoveries regarding only bluetooth connections. :crying:
I'm using nigthlies for a long time.
With cm-11-20140724-NIGHTLY-jflte S4 GT-I9505 and my car (BMW E61, 2006) connects perfectly. Later nightly roms aren't working with my car.
Any hints?
rainer777 said:
Hi,
I've made similar discoveries regarding only bluetooth connections. :crying:
I'm using nigthlies for a long time.
With cm-11-20140724-NIGHTLY-jflte S4 GT-I9505 and my car (BMW E61, 2006) connects perfectly. Later nightly roms aren't working with my car.
Any hints?
Click to expand...
Click to collapse
I have the same problem, but can't find cm-11-20140724-NIGHTLY-jflte, can you share it.
Tks
viincrt said:
I have the same problem, but can't find cm-11-20140724-NIGHTLY-jflte, can you share it.
Tks
Click to expand...
Click to collapse
You can use the latest Snapshot: cm-11-20140804-SNAPSHOT-M9-jflte.zip
In this one bluetooth is working correctly.
You can download at cyanogenmod.org
Regards,
Rainer
Same thing on SPH-L720
I noticed that the same thing happened with my Sprint Galaxy S4 (SPH-L720), on Cyanogenmod and Paranoid Android. I didn't even think to flash an older version of the ROM. Guess I'll do that since I miss having Bluetooth connectivity in my car.
Does anyone know why this started happening in recent builds, though? I haven't seen anything about it.
rainer777 said:
You can use the latest Snapshot: cm-11-20140804-SNAPSHOT-M9-jflte.zip
In this one bluetooth is working correctly.
You can download at cyanogenmod.org
Regards,
Rainer
Click to expand...
Click to collapse
Latest snapshot is cm-11-20141009-SNAPSHOT-M11-jflte and still has the problem. Connects but disconnects after a couple of minutes. Both in my car and my wife's car. Very annoying.
rainer777 said:
You can use the latest Snapshot: cm-11-20140804-SNAPSHOT-M9-jflte.zip
In this one bluetooth is working correctly.
You can download at cyanogenmod.org
Regards,
Rainer
Click to expand...
Click to collapse
hi
i have installed the dirty unicorn rom, and it works good, but the problem is the batery life, only one day.
now i have tested the cm-11-20140804-SNAPSHOT-M9-jflte.zip, and it works with problems, sometimes it dont disconect from the car and on the nest time it does not connect. normaly when it works, only can do on call the second only work after disable and enable the bluetooh.
tks
viincrt said:
hi
i have installed the dirty unicorn rom, and it works good, but the problem is the batery life, only one day.
now i have tested the cm-11-20140804-SNAPSHOT-M9-jflte.zip, and it works with problems, sometimes it dont disconect from the car and on the nest time it does not connect. normaly when it works, only can do on call the second only work after disable and enable the bluetooh.
tks
Click to expand...
Click to collapse
Has anyone tried the newest M12 snapshot to see if resolved their issue? I have the same issue on multiple M11 snapshots.
I have the last mahdi rom and use a bluetooth speaker for my bath. I don't have this problem. I don't know maybe they have another bluetooth driver or something
smurof1 said:
Has anyone tried the newest M12 snapshot to see if resolved their issue? I have the same issue on multiple M11 snapshots.
Click to expand...
Click to collapse
I just updated to the M12 Snapshot and managed to reconnected to my car about 15 times without any issues. I'll post back if I see other issues with this update.
CM11 M12 Bluetooth/WiFi Issue - Fix?
Apologies for the hijack, as this may not be entirely similar to the OP, but the solution could help.
I was experiencing wifi disconnects when I would toggle on bluetooth, when using CM11 M10 or higher.
With a clean install of Cm11 M12 (reset/new user + formatted /system), I finally worked up the courage (and kinda' understand what it is I have done) and updated the bootloader (not sure if necessary) and the GSM/LTE modems to the latest - XXUGNK4 - from here http://goo.gl/RziHz1
I was previously on XXUFNC6 (from the stock ROM), went to XXUGNI2 (closest to my country based on this thread http://goo.gl/TQi3gz) but that did not work either. So I went straight for the jugular, and installed first the bootloader, then the dual modem pack for XXUGNK4.
So far testing has yielded positive results.
Streaming audio (320mbps) via BT plus downloading some ISOs from MS (speed between 550KB/s to 1.01MB/s), and so far no issues.
Not saying this is going to work for anyone else, or solve the OP's exact issue, but it seems to for me.
-P