https://devzone.nordicsemi.com/f/nordic-q-a/46501/running-error-of-nrfutil-5-2-from-source-codeHi, I try to run nrfutil from source code but it fails. I clone the master branch of nrfutil (v5.2) from github, and run it by this command: py -2 .\nordicsemi\__main__.py dfu ble -ic NRF52 -p COM29 -pkg .\dfu_pkg.zip Then it shows an erroren-USTelligent Community 13Fri, 26 Apr 2019 12:57:16 GMThttps://devzone.nordicsemi.com/thread/184085?ContentTypeID=1Fri, 26 Apr 2019 12:57:16 GMT137ad170-7792-4731-bb38-c0d22fbe4515:1891eb0c-8ec8-4002-9d08-aa66f68ad359Youqun Sun<p>Found the reason.</p> <p>The file __main__.py should be placed at its parent directory, because it imports packages as &#39;from nordicsemi.dfu.xxx import xxx&#39;, it should at the directory level of parent of nordicsemi.</p><div style="clear:both;"></div>