https://devzone.nordicsemi.com/f/nordic-q-a/27410/update-bootloaderI use nRF52840-Preview-DK PCA10056 v0.9.3, SDK 14.1.0. I would like update bootloader, but i have any problems. I do these steps 1.eraseall 2.program softdevice 3.load bootloader 4.load application 5.load bootloader package zip file. My problemen-USTelligent Community 13Tue, 13 Feb 2018 16:58:11 GMThttps://devzone.nordicsemi.com/thread/120742?ContentTypeID=1Tue, 13 Feb 2018 16:58:11 GMT137ad170-7792-4731-bb38-c0d22fbe4515:d1850c42-9d0e-484e-a8fa-f0884a48f2c6Hayk<p>Sounds there was a problem with NRF 52840 PCA 10056 version 0.9.2.&nbsp;Adding a call of&nbsp;__SEV(); to event processing function fixed the issue.&nbsp;</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/108256?ContentTypeID=1Mon, 27 Nov 2017 12:50:54 GMT137ad170-7792-4731-bb38-c0d22fbe4515:0973e492-7551-467d-a1a9-fc3eee8c3a59Bj&#248;rn Kvaale<p>Have you taken a <a href="http://infocenter.nordicsemi.com/topic/com.nordic.infocenter.sdk5.v14.2.0/sdk_app_usb_dfu_bootloader.html?cp=4_0_0_4_4_3">look at the infocenter yet</a>? It explains this example quite well.</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/108254?ContentTypeID=1Wed, 22 Nov 2017 16:35:25 GMT137ad170-7792-4731-bb38-c0d22fbe4515:6f1386ee-7f81-499b-b8d5-81d289045c00Hayk<p>Hi Bjorn. I just use this example experimental_bootloader_secure_usb from SDK 14.1.0. The first four steps I do with keil. Then I use these command lines in my five step nrfutil pkg generate --hw-version 52 --sd-req 0x96 --bootloader-version 1 --bootloader nrf52840_xxaa_S140.hex --key-file private.pem dfu_package.zip and nrfutil dfu serial -pkg dfu_package.zip -p COM12</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/108255?ContentTypeID=1Wed, 22 Nov 2017 09:53:15 GMT137ad170-7792-4731-bb38-c0d22fbe4515:10f85b4e-d6ed-4214-92c6-607a21e79842Bj&#248;rn Kvaale<p>Would you mind uploading the code so I can have a look and try it for myself?</p><div style="clear:both;"></div>