/efs/bluetooth/bt_addr
, /data/vendor/mac_addr/bt.mac
or /data/misc/bluetooth/bdaddr
and MAKE A BACKUP of this file! Root privileges will need to be granted when navigating to and modifying this file. [The location of the file for editing Bluetooth MAC Address will vary depending on your device.]/efs/bluetooth/bt_addr
, /data/vendor/mac_addr/bt.mac
or /data/misc/bluetooth/bdadd
with the real controller's MAC address.