ファームウェアパッケージ書き込み時エラー

gistfile1.txt

[hy@hyPro]% sudo nrfutil dfu usb-serial -pkg ble_master.zip -p /dev/tty.usbmodem14125
Password:

Traceback (most recent call last):
  File "/usr/local/bin/nrfutil", line 11, in <module>
    sys.exit(cli())
  File "/Library/Python/2.7/site-packages/click/core.py", line 764, in __call__
    return self.main(*args, **kwargs)
  File "/Library/Python/2.7/site-packages/click/core.py", line 717, in main
    rv = self.invoke(ctx)
  File "/Library/Python/2.7/site-packages/click/core.py", line 1137, in invoke
    return _process_result(sub_ctx.command.invoke(sub_ctx))
  File "/Library/Python/2.7/site-packages/click/core.py", line 1137, in invoke
    return _process_result(sub_ctx.command.invoke(sub_ctx))
  File "/Library/Python/2.7/site-packages/click/core.py", line 956, in invoke
    return ctx.invoke(self.callback, **ctx.params)
  File "/Library/Python/2.7/site-packages/click/core.py", line 555, in invoke
    return callback(*args, **kwargs)
  File "/Library/Python/2.7/site-packages/nordicsemi/__main__.py", line 827, in usb_serial
    do_serial(package, port, connect_delay, flow_control, packet_receipt_notification, baud_rate, False)
  File "/Library/Python/2.7/site-packages/nordicsemi/__main__.py", line 793, in do_serial
    dfu.dfu_send_images()
  File "/Library/Python/2.7/site-packages/nordicsemi/dfu/dfu.py", line 129, in dfu_send_images
    self._dfu_send_image(self.manifest.application)
  File "/Library/Python/2.7/site-packages/nordicsemi/dfu/dfu.py", line 90, in _dfu_send_image
    self.dfu_transport.open()
  File "/Library/Python/2.7/site-packages/nordicsemi/dfu/dfu_transport_serial.py", line 213, in open
    self.__set_prn()
  File "/Library/Python/2.7/site-packages/nordicsemi/dfu/dfu_transport_serial.py", line 309, in __set_prn
    self.__get_response(DfuTransportSerial.OP_CODE['SetPRN'])
  File "/Library/Python/2.7/site-packages/nordicsemi/dfu/dfu_transport_serial.py", line 436, in __get_response
    if resp[0] != DfuTransportSerial.OP_CODE['Response']:
IndexError: list index out of range