https://devzone.nordicsemi.com/f/nordic-q-a/121995/custom-nrf9151-board-thingy91x-based-application-not-running-after-flash-sdk-v2-9-0Hello, We have developed a custom board using the nRF9151, with the design and board files largely based on the Thingy91x. We are using the nRF Connect SDK v2.9.0. When flashing a simple application such as &quot;zephyr/samples/hello_world&quot;, the applicationen-USTelligent Community 13Wed, 04 Jun 2025 09:23:54 GMThttps://devzone.nordicsemi.com/thread/538007?ContentTypeID=1Wed, 04 Jun 2025 09:23:54 GMT137ad170-7792-4731-bb38-c0d22fbe4515:4389986b-de19-4659-b9d2-da1879cd3057JONATHAN LL<p>HI,<br /><br />Have you had the hardware reviewed?<br /><br />Did you flash the nRF91 or one of the other SoC&#39;s?<br /><br />Regards,<br />Jonathan</p><div style="clear:both;"></div>