nrfutil installation failing

[Hugo Habicht]

Hi all,

the installation of nrfutils as per nordic infocenter

is failing. Not sure if the first step worked (claims it did but with some error messages):

Next step definitely failed:

So since this python stuff is not working here my question:

How do I create a DFU file without nrfutil?

Regards,

[Einar Thorsrud]

Hi,

We do not provide any other tools for making DFU packages than nrfutil. Can you try using python3 (and pip3) instead?

[Hugo Habicht]

Hi Einar,

no, the version above is the newest version available for our operating system (RHEL7). python 3 is no option.

I do not need other tools I need a description of the file / archive format.

Btw: what were you thinking in nordic writing (as it seems essential) tools in an archaic scripting language where that dutch guy reinvented the wheel for the 100th time and needed 3.9 versions so far and still counting?

Regards,

[Einar Thorsrud]

Hi,

If you want to spend time to generate the update image yourself, then you need to generate and sign the init packet, and pack that together with the binary image(s) and manifest file. There is some documentation about that here (though it assumes you just want to modify the existing nrfutil implementation), and you should refer to <SDK>\components\libraries\bootloader\dfu\dfu-cc.proto. You can also refer to to DFU protocol for a general understanding. You can refer to the nrfutil implementation for more details.

[Turbo J]

The last pyhton 2.7 compatible nrfutil is 5.2.0 version. Try forcing this version, it should install on RHEL7:

pip install nrfutil==5.2.0