Error in NRFUTIL

[MHD_123]

Getting this error while generating firmware image for an example package(blinky) given in nRF5_SDK_15.2.0 SDK

nrfutil pkg generate --hw-version 52 --application blinky_pca10056.hex --key-file priv.pem -application-version 2 --sd-req 0x00  blinky_pca10056.zip

Error :-

  File "/Library/Python/2.7/site-packages/nrfutil-5.1.0-py2.7.egg/nordicsemi/dfu/nrfhex.py", line 187, in tobinfile

    size = self.size()

  File "/Library/Python/2.7/site-packages/nrfutil-5.1.0-py2.7.egg/nordicsemi/dfu/nrfhex.py", line 152, in size

    size = max_address - min_address + 1

TypeError: unsupported operand type(s) for -: 'NoneType' and 'int'

[Andy]

Have you tried inputting a valid sd-req option?

  --sd-req TEXT                   The SoftDevice requirements. A comma-
                                  separated list of SoftDevice firmware IDs (1
                                  or more) of which one must be present on the
                                  target device. Each item on the list must be
                                  a two- or four-digit hex number prefixed
                                  with "0x" (e.g. "0x12", "0x1234").
                                  A non-
                                  exhaustive list of well-known values to use
                                  with this option follows:
                                  |s112_nrf52_6.0.0|0xA7|
                                  |s112_nrf52_6.1.0|0xB0|
                                  |s112_nrf52_6.1.1|0xB8|
                                  |s130_nrf51_1.0.0|0x67|
                                  |s130_nrf51_2.0.0|0x80|
                                  |s132_nrf52_2.0.0|0x81|
                                  |s130_nrf51_2.0.1|0x87|
                                  |s132_nrf52_2.0.1|0x88|
                                  |s132_nrf52_3.0.0|0x8C|
                                  |s132_nrf52_3.1.0|0x91|
                                  |s132_nrf52_4.0.0|0x95|
                                  |s132_nrf52_4.0.2|0x98|
                                  |s132_nrf52_4.0.3|0x99|
                                  |s132_nrf52_4.0.4|0x9E|
                                  |s132_nrf52_4.0.5|0x9F|
                                  |s132_nrf52_5.0.0|0x9D|
                                  |s132_nrf52_5.1.0|0xA5|
                                  |s132_nrf52_6.0.0|0xA8|
                                  |s132_nrf52_6.1.0|0xAF|
                                  |s132_nrf52_6.1.1|0xB7|
                                  |s140_nrf52_6.0.0|0xA9|
                                  |s140_nrf52_6.1.0|0xAE|
                                  |s140_nrf52_6.1.1|0xB6|

[MarcoR]

Hi Andy, I'm experiencing the same error. I tried with a valid sd-req and nothing changed.

nrfutil pkg generate --hw-version 52 --application-version 1 --application nrf52832_xxaa.hex --sd-req 0xB7 --key-file private.key app_dfu_package.zip

I'm following the step-by-step guide provided by Hung Bui (https://devzone.nordicsemi.com/nordic/b/blog/posts/getting-started-with-nordics-secure-dfu-bootloader).

Do you have any other advice?