Bluetooth tethering stopped working

Hi,
I’ve been using my phone’s data connection to go online with my macbook by way of Bluetooth. It’s been working fine for about a year, but sometime in the past few months (possibly after the 10.5.6 update) it stopped working. Now when I try to hit the connect button in the network preference panel, I get "A Bluetooth serial failure has occurred: Failed to open an RFCOMM serial channel. Check if authentication needs to be enabled in your device."
I’m sure that nothing has changed on the phone, so somehow the OS isn’t recognizing the phone as a modem anymore. Can anyone offer up any help?
Thanks

deleting the blues tooth preferences would reset them to default.
but to revert to an earlier of bluetooth you may want to try replacing 2 bluetooth drivers from your install DVD.
Use pacifist so extract and install
/System/Library/Extensions/IOBluetoothFamily.kext
/System/Library/Extensions/IOBluetoothHIDDriver.kext
disclaimer I have not needed to do this on my system and cannot be responsible if anything breaks it is just a suggestion.

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Last edited by vpraveenn (2015-02-17 21:05:16)

I have the same bluetooth controller (0cf3:3005, Atheros AR3011) on my laptop (ASUS K53SV) and have the exact same problem. Bluetooth works for a while until tx errors start showing up:
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[24954.332842] Bluetooth: hci0 command 0x0c52 tx timeout
[24956.338826] Bluetooth: hci0 command 0x0c24 tx timeout
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Can't init device hci0: Connection timed out (110)
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Last edited by PkmX (2015-02-18 14:55:38)

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