https://devzone.nordicsemi.com/f/nordic-q-a/93964/pca10056-bootloader-on-nrf52840Hello all, Currently, we are using the nRF52840-DK and realized that the interface to upload programs is very handy (being able to simply drag a .hex file onto the device and it being uploaded from their). Currently, our bootloader&#39;s FW installationen-USTelligent Community 13Fri, 18 Nov 2022 15:48:39 GMThttps://devzone.nordicsemi.com/thread/396466?ContentTypeID=1Fri, 18 Nov 2022 15:48:39 GMT137ad170-7792-4731-bb38-c0d22fbe4515:e9ed0d2f-617f-470a-9422-a74923df3d91jspear<p>I figured, thank you for the confirmation!</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/396408?ContentTypeID=1Fri, 18 Nov 2022 12:45:05 GMT137ad170-7792-4731-bb38-c0d22fbe4515:828408cd-f535-447e-92df-4c590af1172eEinarh<p>Hello</p> [quote user=""]This may be related to the built-in JLink on the Development Kit[/quote] <p>Yes, this is possible because of the J-Link firmware running on the interface MCU, specifically the MSD functionality:</p> <p><a href="https://infocenter.nordicsemi.com/index.jsp?topic=%2Fug_nrf52840_dk%2FUG%2Fdk%2Fif_mcu.html&amp;cp=4_0_4_6">https://infocenter.nordicsemi.com/index.jsp?topic=%2Fug_nrf52840_dk%2FUG%2Fdk%2Fif_mcu.html&amp;cp=4_0_4_6</a></p> <p>To get the same functionality you would need something similar on your board.</p> <p>Best regards,</p> <p>Einar</p><div style="clear:both;"></div>