https://devzone.nordicsemi.com/f/nordic-q-a/20785/nrf-toolbox-dfu-unkown-8202Hello, When I try to use the DFU function, I received 8202 error from nrf Toolbox. My environment is as follow: SDK version: 12.2.0 SoftDevice version: S132 3.1.0. The bootloader I used was the bootloader_secure example and my pulic key used isen-USTelligent Community 13Mon, 27 Mar 2017 10:28:18 GMThttps://devzone.nordicsemi.com/thread/81176?ContentTypeID=1Mon, 27 Mar 2017 10:28:18 GMT137ad170-7792-4731-bb38-c0d22fbe4515:185c15ae-5ea1-4956-9c18-fdf22befbc99Hung Bui<p>If you use the normal one, not the debug one, you need to state the application version and other versions. Please have a look <a href="https://devzone.nordicsemi.com/blogs/1085/getting-started-with-nordics-secure-dfu-bootloader/">here</a>.</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/81175?ContentTypeID=1Sat, 25 Mar 2017 04:06:59 GMT137ad170-7792-4731-bb38-c0d22fbe4515:d53c95f9-dec1-48cd-91ad-3e7a4f7ab9c4SirenB<p>I finally find the answer.</p> <p>I used the wrong project.</p> <p>The project I used was pca10040. If I use pca10040_debug, everything will go well.</p><div style="clear:both;"></div>