https://devzone.nordicsemi.com/f/nordic-q-a/55531/secure-dfu-bootloader-signature-failsI can successfully download an image using nrfutil dfu serial when I use a test image compiling the bootloader with the Nordic default public key. I cannot successfully download an image using nrfutil dfu serial when I generate an image using a generateden-USTelligent Community 13Thu, 12 Dec 2019 23:55:40 GMThttps://devzone.nordicsemi.com/thread/225260?ContentTypeID=1Thu, 12 Dec 2019 23:55:40 GMT137ad170-7792-4731-bb38-c0d22fbe4515:f8d80e3d-47bd-4ba8-b347-602f947a4b0aKSV<p>I was able to get nrfutil v5.2.0 to work (incorrect python version) and it generated keys correctly.</p> <p>Problem solved.</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/225243?ContentTypeID=1Thu, 12 Dec 2019 18:21:50 GMT137ad170-7792-4731-bb38-c0d22fbe4515:e6386014-4578-4674-b339-5aab53d4d1ebKSV<p>Version 6.0.0 has the &quot;Signature fails&quot; error because of the bug in generating keys.</p> <p>However, with v6.0.0 I can successfully download the test image hrs_application_s132.zip - How does that work?</p> <p>I tried v5.2.0, but it fails with &quot;TypeError: can only concatenate list (not &quot;map&quot;) to list&quot;<br /><br /></p> <p>Where to go from here?</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/225125?ContentTypeID=1Thu, 12 Dec 2019 10:29:16 GMT137ad170-7792-4731-bb38-c0d22fbe4515:6c7c3f67-6f1f-45f9-b1a4-c5e915841208bjorn-spockeli<p>Yes, this a bug with the v6.x.x version of nrfutil, see&nbsp;<a href="https://github.com/NordicSemiconductor/pc-nrfutil/issues/289">https://github.com/NordicSemiconductor/pc-nrfutil/issues/289</a>.&nbsp;Please use the&nbsp;v5.2.0 version found under <a href="https://github.com/NordicSemiconductor/pc-nrfutil/releases">https://github.com/NordicSemiconductor/pc-nrfutil/releases</a>.</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/225048?ContentTypeID=1Wed, 11 Dec 2019 23:49:01 GMT137ad170-7792-4731-bb38-c0d22fbe4515:6b3df917-752a-412d-932e-5968c170615bKSV<pre class="western" style="font-weight:normal;text-decoration:none;"><span style="font-family:Ubuntu;"><span style="font-size:small;">nRF Util v6.0.0a0</span></span></pre> <p>In the link below, it seems to indicate that nrfutil v6.0.0a1 is generating the key incorrectly. Is this also true of v6.0.0a0?</p> <p><a href="https://devzone.nordicsemi.com/f/nordic-q-a/54202/error-of-invalid_object-when-using-nrf-connect-desktop-after-generating-dfu-zip-file-with-new-keys">https://devzone.nordicsemi.com/f/nordic-q-a/54202/error-of-invalid_object-when-using-nrf-connect-desktop-after-generating-dfu-zip-file-with-new-keys</a></p> <p></p> <p>Do I need to change to nrfutil version 5.2.0?</p><div style="clear:both;"></div>