https://devzone.nordicsemi.com/f/nordic-q-a/84244/west-flash-failhello Nordic i am using nrf52840 with zephyr ncs unfortunatly i used this command &quot;pamac install downgrade&quot; at one point since then i can not use &#39;west flash --erase&#39; the result for that command is : i have tried the following: anden-USTelligent Community 13Wed, 02 Feb 2022 07:18:45 GMThttps://devzone.nordicsemi.com/thread/350776?ContentTypeID=1Wed, 02 Feb 2022 07:18:45 GMT137ad170-7792-4731-bb38-c0d22fbe4515:e063c0b9-3de8-4f55-b4d4-5cd44996db98ziv123<p>hi&nbsp;</p> <p>ok, what actually solved the issue for me was downgrading my nrfx command tool from 10.15 to 10.12.2</p> <p>i did it by downloading that version to my download dir and run the following command</p> <p><span><pre class="ui-code" data-mode="text">sudo pacman -U ~/Downloads/nrf5x-command-line-tools-10.12.2-2-x86_64.pkg.tar.zst</pre></span></p> <p><span></span></p> <p><span>thanks</span></p> <p><span>best regards</span></p> <p><span>Ziv</span></p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/350562?ContentTypeID=1Tue, 01 Feb 2022 07:48:55 GMT137ad170-7792-4731-bb38-c0d22fbe4515:eab3f322-aec0-45d7-972d-bbac6607e796H&#229;kon Alseth<p>Hi,</p> <p>&nbsp;</p> <p>This line indicates that it is something in your system requiring this specific version of west:</p> <p><pre class="ui-code" data-mode="text">pkg_resources.DistributionNotFound: The &#39;west==0.10.1&#39; distribution was not found and is required by the application</pre></p> <p>&nbsp;</p> <p>Have you tried building and running other samples to see if you get the same behavior there? Could it be enough to remove your build folder and reconfigure?</p> <p>&nbsp;</p> <p>Kind regards,</p> <p>Håkon</p><div style="clear:both;"></div>