https://devzone.nordicsemi.com/f/nordic-q-a/22014/customizing-init-packet-failed-for-nrfutil-v2-3-0Hi all, I&#39;m working on secure bootloader on sdk12.2.0, And Installed nrfutil v2.3.0 by following the user guide nrfutil v1.2 successfully and it working well without any changes in source. Now I need to customize the init packet i.e I need to adden-USTelligent Community 13Tue, 16 May 2017 11:48:05 GMThttps://devzone.nordicsemi.com/thread/86386?ContentTypeID=1Tue, 16 May 2017 11:48:05 GMT137ad170-7792-4731-bb38-c0d22fbe4515:36adf93b-ee07-4ae7-aedb-9e7f88748b2dbjorn-spockeli<p>Could you try uninstalling nrfutil using <code>pip uninstall nrfutil</code> and then run <code>python setup.py install</code> in modified source code folder?</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/86385?ContentTypeID=1Tue, 16 May 2017 10:26:02 GMT137ad170-7792-4731-bb38-c0d22fbe4515:a8fd6c38-ef06-4596-81e7-069ad724f0c2Raj<p>Yes, I run that command but it still giving same error</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/86384?ContentTypeID=1Mon, 15 May 2017 13:51:39 GMT137ad170-7792-4731-bb38-c0d22fbe4515:e4696dbc-cfbc-48f6-86bf-fc344384d777bjorn-spockeli<p>Did you run <code>python setup.py build</code> after you modified the python source?</p><div style="clear:both;"></div>