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Help VZW Stock 4.2.2 BT issue

S

sanjeeva7

Well-Known Member
Sorry if this is a repost but I searched the site and looked through several pages of this forum. I know I am not the only one, saw this on the VZW forums and spoke to L2 VZW support...is there is workaround to the Bluetooth not working?

Meaning my BT doesn't even turn on. I am running stock 4.2.2, rooted, and bootloader unlocked. Pain in the butt now that I can't use my BT in my car to take phone calls. As soon as I turn on the BT (through the widget or through settings) it will not stay on. Already performed a factory reset and that did nothing.
 
This happened to me when I updated. Took me a while to find the answer. It was a file permissions problem for me. I found it in this thread
https://code.google.com/p/android/issues/detail?id=39688

Sparing you the pain of reading through a lot of "me too this doesn't work" or "works fine for me" messages which never helps anyone with the issue. The one that is important is:

#62 hvan...@gmail.com
I checked the libbt-vendor.so file on my Galaxy Nexus and it was already rw-r--r-- but bluetooth wasn't working. I then changed permissions to rw-rw-rw- and now I can switch bluetooth off and on as much as I want. I don't have a bluetooth device handy but I'll try later if it works.

And this post in case you don't know how to change permissions. Although this is a more manual method. I seem to recall using ES file explorer or some other type of root file explorer to change the file permission.

#63 gilles.p...@gmail.com
It is not mandatory to root the phone to change file permission (but bootloader must be unlocked):

1) boot using unsecure boot image
2) execute adb remount (to make "/system" read/write)
3) execute adb shell chmod a+r /system/vendor/lib/libbt-vendor.so (or a+rw if you think you need "rw-rw-rw-" file mode)
 
Thank you that worked. I had to re-root my phone after a recent factory reset. I used Root Explorer and changed permissions, rebooted, now BT works.

A million thanks!!
 
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