BT4.0 Low Energy is apparently supported and functional on the N9. Can anyone investigate further? Scratch that, a bit of Googling brought something up: BT4.0LE apparently requires BlueZ 5.x, and the 3.5 kernel. The Bluetooth kernel subsystem will need to be ported, and BlueZ patched. Let's see what we get. EDIT 2: The difference between BlueZ 4.x and 5.x is massive. About 0 of the patches still apply to 5.x. This will be a huge piece of work.