https://devzone.nordicsemi.com/f/nordic-q-a/73363/modify-drivers-and-build-firmwareI download 2 projects 1. Zephyr Project 2.5.99 from install to west flash is Done 2. nRF Connect SDK 1.5.99 manully from install to SES IDE is Done 3. use nrfconnect361x8664.AppImage -&gt; programmer -&gt; flash Done I want to do follows~en-USTelligent Community 13Tue, 30 Mar 2021 20:18:19 GMThttps://devzone.nordicsemi.com/thread/302658?ContentTypeID=1Tue, 30 Mar 2021 20:18:19 GMT137ad170-7792-4731-bb38-c0d22fbe4515:2d5c2ab7-8507-42df-a437-0de26ef16a5bfatalfeel<p>thanks i will try and tell you result</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/302602?ContentTypeID=1Tue, 30 Mar 2021 13:24:03 GMT137ad170-7792-4731-bb38-c0d22fbe4515:1dc91556-a9a5-4c03-9120-cf46e0ad80a4Albrecht Markus Schellenberger<p>Hello,</p> <p>you basically have to compile your application including DFU support. This will add the MCUboot to your build. You can follow this guideline:</p> <p><a href="https://devzone.nordicsemi.com/nordic/cellular-iot-guides/b/getting-started-cellular/posts/how-to-program-any-project-to-the-thingy-91-with-dfu">https://devzone.nordicsemi.com/nordic/cellular-iot-guides/b/getting-started-cellular/posts/how-to-program-any-project-to-the-thingy-91-with-dfu</a></p> <p>It is written for the Thingy91, but applicable for most of the Nordic devices.</p> <p>Cheers!</p> <p>Markus</p><div style="clear:both;"></div>