https://devzone.nordicsemi.com/f/nordic-q-a/123337/fail-to-debug-e83-2g4m03s-with-nrf5340Hello! I bought dev board with this module and plan to use it in my product. I bought a development board with this module and plan to use it in my product. While I have some experience working with previous nRF products, it&#39;s been a while, anden-USTelligent Community 13Mon, 13 Apr 2026 07:05:12 GMThttps://devzone.nordicsemi.com/thread/564825?ContentTypeID=1Mon, 13 Apr 2026 07:05:12 GMT137ad170-7792-4731-bb38-c0d22fbe4515:3689f93f-3d91-434c-b1a1-c84afef95981Rasul Kishov<p>Thank you.<br data-start="277" data-end="280" /> It&rsquo;s been quite a while since I posted this question, but I eventually figured it out. It turned out to be something odd&mdash;basically, switching it off and on again. After some tinkering, it worked.<br /><br />Doing pristine build is also very important.&nbsp;Just in case if anyone also get this kind of trouble</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/564824?ContentTypeID=1Mon, 13 Apr 2026 06:59:08 GMT137ad170-7792-4731-bb38-c0d22fbe4515:beaa6d1d-8eb7-469d-8981-87ba53df7171Bolton<p>This kind of behavior is often related to optimization settings or mismatched debug configurations, even when &ldquo;optimize for debugging&rdquo; is selected. You might want to double-check the toolchain version, debug interface settings, and ensure symbols are generated correctly.</p> <p>From <a href="https://sloperider3d.io">Slop Rider 3D</a></p><div style="clear:both;"></div>