https://devzone.nordicsemi.com/f/nordic-q-a/121930/please-help-to-recover-possibly-bricked-thing-91xHi, It&#39;s looks like I bricked my Thingy:91x . It was working fine when I program it with the target &quot; thingy91x/nrf9151/ns &quot; then later while learning I try program the in the &quot; thingy91x/nrf5340/cpuapp &quot; after that I can&#39;t program device anymore in bothen-USTelligent Community 13Tue, 03 Jun 2025 15:36:58 GMThttps://devzone.nordicsemi.com/thread/537912?ContentTypeID=1Tue, 03 Jun 2025 15:36:58 GMT137ad170-7792-4731-bb38-c0d22fbe4515:b428f3d7-9804-4cc0-8d22-baf09aac5361Achim Kraus<p>The Thingy:91X uses 1.8V GPIO and the&nbsp;<span>nRF52840-DK 3V, so it&#39;s no wonder ...&nbsp;</span>&nbsp;</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/537563?ContentTypeID=1Sat, 31 May 2025 14:17:20 GMT137ad170-7792-4731-bb38-c0d22fbe4515:e99e3cb2-8e29-40dd-a002-920d1386adc1Salman Faris<p>After trying for several hours with both&nbsp;<span>&nbsp;nRF52840-DK debugger anb</span><span>&nbsp;J-Link Lite CortexM. It&#39;s been fixed withJ-Link Lite CortexM and west <span class="emoticon" data-url="https://devzone.nordicsemi.com/cfs-file/__key/system/emoji/1f642.svg" title="Slight smile">&#x1f642;</span></span></p><div style="clear:both;"></div>