[BLE] 다이소 ble모듈 리눅스에 연결시... 해결법.

[46864.573210] usb 3-3.4.3.4.3: new full-speed USB device number 15 using xhci_hcd
[46864.682163] usb 3-3.4.3.4.3: New USB device found, idVendor=0bda, idProduct=8771, bcdDevice= 2.00
[46864.682171] usb 3-3.4.3.4.3: New USB device strings: Mfr=1, Product=2, SerialNumber=3
[46864.682173] usb 3-3.4.3.4.3: Product: Bluetooth Radio
[46864.682174] usb 3-3.4.3.4.3: Manufacturer: Realtek
[46864.682176] usb 3-3.4.3.4.3: SerialNumber: 00E04C239987
[46864.692638] Bluetooth: hci1: RTL: examining hci_ver=0a hci_rev=000b lmp_ver=0a lmp_subver=8761
[46864.693653] Bluetooth: hci1: RTL: rom_version status=0 version=1
[46864.693660] Bluetooth: hci1: RTL: loading rtl_bt/rtl8761bu_fw.bin
[46864.703096] bluetooth hci1: Direct firmware load for rtl_bt/rtl8761bu_fw.bin failed with error -2
[46864.703106] Bluetooth: hci1: RTL: firmware file rtl_bt/rtl8761bu_fw.bin not found

$ cd /usr/lib/firmware/rtl_bt $ sudo ln -s rtl8761b_fw.bin rtl8761bu_fw.bin