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#1 2022-12-01 14:29:58

Registered: 2018-06-20
Posts: 7

Dual boot Bluetooth 5.1 pairing (Sennheiser HD 450BT)

Hello everyone!

I'm trying to set up Bluetooth headphones in a dual boot configuration following arch wiki. I have succesfully extracted the .reg file which is below:

Windows Registry Editor Version 5.00


I suspect I'm dealing with a Bluetooth 5.1 device based on the presence of multiple (LTK, IRK) keys in the file. Accordingly I've made the following files in the /var/lib/bluetooth/F4:7B:09:4A:A0:05/00:1B:66:B6:9E:CF directory:

>>> cat LongTermKey.Key 
>>> cat LongTermKey.Rand 
>>> cat LongTermKey.EDiv 

However after a full reboot I'm still unable to connect to the headphones. I suspect that some device specifics is at play here since both Rand and EDiv values are 0 while IRK seems non-trivial and isn't used.
I would appreciate any advice on what am I doing wrong.


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