OpenSSL commands invalid about nrf52-u2f HOT 4 OPEN

C:\Users\>nrfutil.exe dfu usb-serial -pkg nrf52_u2f_bootloader_v1.0.0_mdk_dongle.zip -p COM4

Traceback (most recent call last):
  File "nordicsemi\__main__.py", line 1457, in <module>
  File "click\core.py", line 764, in __call__
  File "click\core.py", line 717, in main
  File "click\core.py", line 1137, in invoke
  File "click\core.py", line 1137, in invoke
  File "click\core.py", line 956, in invoke
  File "click\core.py", line 555, in invoke
  File "nordicsemi\__main__.py", line 999, in usb_serial
  File "nordicsemi\__main__.py", line 954, in do_serial
  File "nordicsemi\dfu\dfu.py", line 125, in dfu_send_images
  File "nordicsemi\dfu\dfu.py", line 97, in _dfu_send_image
  File "nordicsemi\dfu\dfu_transport_serial.py", line 256, in send_init_packet
  File "nordicsemi\dfu\dfu_transport_serial.py", line 422, in __execute
  File "nordicsemi\dfu\dfu_transport_serial.py", line 503, in __get_response
pc_ble_driver_py.exceptions.NordicSemiException: Extended Error 0x05: The firmware version is too low. For an application, the version must be greate
r than or equal to the current application. For a bootloader, it must be greater than the current version. This requirement prevents downgrade attack
s.
[22172] Failed to execute script __main__