Okay it seems like the paired devices are store in: /var/lib/bluetooth/nn:nn:nn:nn:nn:nn
Where nn:nn:nn:nn:nn:nn is the mac of the bluetooth adapter.
At least its like that on bluez 4, didn't find anything about bluez 5..
I will try it when i get home.
How would i backup this directroy?
Thanks for the tipp greg
Btw im on picoreplayer if this makes any differences