Error when trying to use nrfutil pkg generate

[melta101]

while trying to package my hex file from zephyr  and I have gotten the following error 

nrfutil pkg generate --hw-version 52 --sd-req=0x00 \                                        

        --application build/zephyr/zephyr.hex \

        --application-version 1 blinky.zip

|===============================================================|

|##      ##    ###    ########  ##    ## #### ##    ##  ######  |

|##  ##  ##   ## ##   ##     ## ###   ##  ##  ###   ## ##    ## |

|##  ##  ##  ##   ##  ##     ## ####  ##  ##  ####  ## ##       |

|##  ##  ## ##     ## ########  ## ## ##  ##  ## ## ## ##   ####|

|##  ##  ## ######### ##   ##   ##  ####  ##  ##  #### ##    ## |

|##  ##  ## ##     ## ##    ##  ##   ###  ##  ##   ### ##    ## |

| ###  ###  ##     ## ##     ## ##    ## #### ##    ##  ######  |

|===============================================================|

|You are not providing a signature key, which means the DFU     |

|files will not be signed, and are vulnerable to tampering.     |

|This is only compatible with a signature-less bootloader and is|

|not suitable for production environments.                      |

|===============================================================|

Traceback (most recent call last):

  File "/opt/homebrew/bin/nrfutil", line 8, in <module>

    sys.exit(cli())

             ^^^^^

  File "/opt/homebrew/lib/python3.12/site-packages/click/core.py", line 829, in __call__

    return self.main(*args, **kwargs)

           ^^^^^^^^^^^^^^^^^^^^^^^^^^

  File "/opt/homebrew/lib/python3.12/site-packages/click/core.py", line 782, in main

    rv = self.invoke(ctx)

         ^^^^^^^^^^^^^^^^

  File "/opt/homebrew/lib/python3.12/site-packages/click/core.py", line 1259, in invoke

    return _process_result(sub_ctx.command.invoke(sub_ctx))

                           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

  File "/opt/homebrew/lib/python3.12/site-packages/click/core.py", line 1259, in invoke

    return _process_result(sub_ctx.command.invoke(sub_ctx))

                           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

  File "/opt/homebrew/lib/python3.12/site-packages/click/core.py", line 1066, in invoke

    return ctx.invoke(self.callback, **ctx.params)

           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

  File "/opt/homebrew/lib/python3.12/site-packages/click/core.py", line 610, in invoke

    return callback(*args, **kwargs)

           ^^^^^^^^^^^^^^^^^^^^^^^^^

  File "/opt/homebrew/lib/python3.12/site-packages/nordicsemi/__main__.py", line 867, in generate

    package.generate_package(zipfile_path)

  File "/opt/homebrew/lib/python3.12/site-packages/nordicsemi/dfu/package.py", line 403, in generate_package

    for key, firmware_data in self.firmwares_data.iteritems():

                              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

AttributeError: 'dict' object has no attribute 'iteritems'

[Edvin]

Hello,

The nrfutil pkg generate is a command used in the "old"/"Legacy" nRF5 SDK, and not in Zephyr. Are you intentionally using this with a Zephyr/NCS application? It will not work out of the box, although I do believe some customers have made it work. 

Perhaps what you are looking for is the MCUBOOT bootloader in NCS? I believe the Nordic Developer Academy course nRF Connect SDK Intermediate covers this quite good.

If you are intentionally trying to use the nRF5 SDK bootloader? If so, I believe I need some more details on what you are trying to do.

Best regards,

Edvin

[melta101]

Actually,
I have been following the Zephyr Documentation,(https://docs.zephyrproject.org/latest/boards/nordic/nrf52840dongle/doc/index.html)
where it written that the board is factory-programmed with Nordic’s bootloader from Nordic’s nRF5 SDK, such that we would need to use nrfutil,
if there are other tools which would help other than MCUBOOT, nrfutil to help in flashing, could you suggest that

The problem with MCUBOOT is the need of manual intervention, I had seen the nrf5 sdk has a way to do buttonless DFU, are there such way to do in nrfconnect SDK, if yes, could you lead to towards those resources and samples.