https://devzone.nordicsemi.com/f/nordic-q-a/92361/nrf52840-dk-disconnects-while-flashingI am trying to complete the course &quot;nRF Connect SDK Fundamentals&quot; using a nRF52840 DK board (version 3.0.0) connected to a Mac Mini (Intel processor) running macOS version 10.15.7. Everything went smoothly up until lesson 7 Exercise 2 (which is abouten-USTelligent Community 13Sun, 14 Sep 2025 14:47:50 GMThttps://devzone.nordicsemi.com/thread/548671?ContentTypeID=1Sun, 14 Sep 2025 14:47:50 GMT137ad170-7792-4731-bb38-c0d22fbe4515:8b531e7e-1375-4f42-9329-ea4965ca0b58warning<p>I have the same issue. why hasnt anyone fixed this????</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/396249?ContentTypeID=1Thu, 17 Nov 2022 14:44:53 GMT137ad170-7792-4731-bb38-c0d22fbe4515:807e17f7-f2b1-4f75-aad0-1043d827aea0willemx<p>I switched to a linux pc and now everything is fine.</p> <p>(sorry for this late reply)</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/388325?ContentTypeID=1Wed, 28 Sep 2022 11:02:56 GMT137ad170-7792-4731-bb38-c0d22fbe4515:16c18c62-ac8c-4525-9c80-782d59a9edfeKenneth<p>Can&#39;t think of anything in specific.</p> <p>Any difference if you update <a href="https://www.nordicsemi.com/Products/Development-tools/nrf-command-line-tools/download">nrf command line tools</a> or switch to a different USB port? Do you see the same using for instance a different PC or Mac? I am thinking some sort of power surge on USB.</p> <p>Kenneth</p><div style="clear:both;"></div>