DFU over USB not running application on nRF52840https://devzone.nordicsemi.com/f/nordic-q-a/71653/dfu-over-usb-not-running-application-on-nrf52840Hey all. I was testing DFU over USB on an nRF52840, SDK 17.0.2 and I can&#39;t seem to get the actual application to run after a successful DFU. I generate my own keys, use them with the secure_bootloader_usb_mbr_pca10056 example, everything builds greaten-USTelligent Community 13Tue, 16 Feb 2021 14:36:16 GMTRE: DFU over USB not running application on nRF52840https://devzone.nordicsemi.com/thread/294658?ContentTypeID=1Tue, 16 Feb 2021 14:36:16 GMT137ad170-7792-4731-bb38-c0d22fbe4515:495fa0d8-5558-4816-a391-795235def6c4Amanda Hsieh<p>Please verify the answer to benefit other users if the answer helps.&nbsp;</p> <p>-Amana H.</p><div style="clear:both;"></div>RE: DFU over USB not running application on nRF52840https://devzone.nordicsemi.com/thread/294654?ContentTypeID=1Tue, 16 Feb 2021 14:23:20 GMT137ad170-7792-4731-bb38-c0d22fbe4515:c4a8fd4a-27e1-4393-bf8b-741bbd834d3fSmallerPond<p>Thanks!&nbsp; I could swear that I read somehwere that you could put anything for sd-req if you aren&#39;t using SD, but now I can&#39;t find where I read that... So maybe I just invented it in my head.&nbsp; Anyway, works great now, much appreciated!</p><div style="clear:both;"></div>RE: DFU over USB not running application on nRF52840https://devzone.nordicsemi.com/thread/294532?ContentTypeID=1Tue, 16 Feb 2021 07:37:18 GMT137ad170-7792-4731-bb38-c0d22fbe4515:1ca17d91-dd85-40c7-bb25-888edabec312Amanda Hsieh<p>Hi,&nbsp;</p> <p>You should use&nbsp;<span>&nbsp;--sd-req 0x00 while geneate the package for the mbr application as&nbsp;</span></p> <p>nrfutil pkg generate --hw-version 52 --sd-req 0x00 --application-version 1 --application blinky_pca10056_mbr.hex --key-file private.pem FW.zip</p> <p>-Amanda H.</p><div style="clear:both;"></div>