https://devzone.nordicsemi.com/f/nordic-q-a/101107/nrf5-sdk-bootloader-with-nrf-connect-sdk-appHi! I&#39;m currently developing the bootloader for nRF52840 using the nRF5 SDK v17.1.0 (based on secure bootloader example) and would like to know if this approach will work with the nRF Connect SDK-based app. The interaction with the bootloader is performeden-USTelligent Community 13Mon, 26 Jun 2023 08:01:56 GMThttps://devzone.nordicsemi.com/thread/432865?ContentTypeID=1Mon, 26 Jun 2023 08:01:56 GMT137ad170-7792-4731-bb38-c0d22fbe4515:71daf7b5-6f62-47ab-b5ff-ebdebc3f4e02AntonZ<p>Thanks, Vidar!</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/432684?ContentTypeID=1Fri, 23 Jun 2023 12:12:41 GMT137ad170-7792-4731-bb38-c0d22fbe4515:7640c91a-0e8e-4c0e-8945-cb1e2400a9b7Vidar Berg<p>Hi,</p> <p>Yes, this should work. Our nRF52840-Dongle comes pre-programmed with the&nbsp;<a title="Open Bootloader with DFU" href="https://infocenter.nordicsemi.com/topic/sdk_nrf5_v17.1.0/ble_sdk_app_open_bootloader.html?cp=9_1_4_4_2">Open Bootloader with DFU</a>&nbsp;from the nRF5 SDK, and it supports programming Zephyr applications.&nbsp;</p> <p>Note: The &#39;nrf52840dongle_nrf52840&#39; target configures the Zephyr app to start at 0x1000 so it doesn&#39;t overlap with the MBR.&nbsp;&nbsp;</p> <p>Best regards,</p> <p>Vidar</p><div style="clear:both;"></div>