https://devzone.nordicsemi.com/f/nordic-q-a/85471/52820-s-firmware-of-app-usb-dfuHi,nordic term， i develop my product that ony have feature with usb and app,there is no sd and ble.i have developed my porject,and now i need achieve the funcation of dfu by nrfutil usb.but i discover that the cmmand &quot; nrfutil pkg generate cmmand&quot; musten-USTelligent Community 13Mon, 07 Mar 2022 13:51:26 GMThttps://devzone.nordicsemi.com/thread/356632?ContentTypeID=1Mon, 07 Mar 2022 13:51:26 GMT137ad170-7792-4731-bb38-c0d22fbe4515:22f52c39-076b-4ee1-9bfc-8322518d5ad4Einar Thorsrud<p>Hi,</p> <p>Starting with SDK 15.0.0 there is no longer a dependency on the SoftDevice if you don&#39;t use BLE. However, nrfutil requires you to specify a SoftDevice with --sd-req nonetheless, and for that you use 0x00 which means no SoftDevice.</p> <p>So the nrfutil pgk generate command can look something like this:</p> <p><pre class="ui-code" data-mode="text">nrfutil pkg generate --hw-version 52 --sd-req 0x00 --application blinky_pca10040e_mbr.hex --application-version 2 --key-file C:\vault\priv.pem dfu.zip</pre></p><div style="clear:both;"></div>