Did just encounter some nrfutil errors again.
First I was installing nrfutil on a new PC, and then trying to generate a settings package for a DFU file (nrfutil settings generate ...). Then it failed with some strange error message, and it turned out that nrfutil does not support python 3.10 or higher.
The solution was to deinstall python 3.10 and install python 3.9.13
Then I tried again. Got a little further as a new error message appeared.
This one was a bit harder to figure out, but as it turned out, there was an update of google protocol buffers in may 2022, and the latests version causes an error. The solution was to downgrade to protobuf verson 3.20.1 using the following command:
pip install -v protobuf==3.20.1
And then I managed to get it working. This took me a bit and lots of googling to figure out.
Nordic should really save everybodys time and keep this information updated on their site. The current nrfutil installation guide is completely worthless.
