Part of the new software release is to make an improvement in the Bluetooth connectivity in the Edison. I suggest you to wait for this new software release due to the end of this year by checking the Edison downloads https://communities.intel.com/docs/DOC-23242 regularly.
In general to turn on the radio you might have to unblock it first.
Check "rfkill list" to view the rf devices, "rfkill unblock bluetooth" should remove the soft block if it's in.
Alternatively, "bluetoothctl unblock <device>".
However, that said - you might have to wait according to what @Intel_Alvarado said until you see full sw support