I recently updated the firmware on my 8525 and as a result I could no longer tether my phone and laptop. As it turns out Microsoft has switched from using DUN (dial up networking) to PAN (personal area network). There were numerous guides available but I couldn’t quite get any of them to work. Below is what ended up working for me.  It is a piecing together of a few guides.

First I had to setup a connection between my phone and the laptop. While I tried several approaches, what I believe finally worked was making the connection from my phone to my computer. Next, I figured out my phone’s bluetooth MAC address. To do this run ‘hcitool scan’. This should return something along the lines of 00:12:D2:02:69:0F. I then ran the following commands:

’sudo modprobe bnep’
’sudo pand –role PANU –connect 00:12:D2:02:69:0F’ <- replace with the MAC you get from above
’sudo dhclient bnep0′

That was it for me. You may have to down some interfaces. For example, ’sudo ifconfig eth0 down’.

To make it more convenient  I saved the above commands in a shell script.