https://devzone.nordicsemi.com/f/nordic-q-a/54334/dfu-uart-clientHello, I would like to update an nrf52840 with DFU (usb-serial). On windows I can use nrfutil. But how to proceed if I want to do that from another microcontroller? Is there some sort of example code available? Thanks, Andreasen-USTelligent Community 13Thu, 14 Nov 2019 12:57:24 GMThttps://devzone.nordicsemi.com/thread/220073?ContentTypeID=1Thu, 14 Nov 2019 12:57:24 GMT137ad170-7792-4731-bb38-c0d22fbe4515:914c1efc-b3ee-409d-b344-a32c714e1195Simon<p>Check out <a href="https://infocenter.nordicsemi.com/index.jsp?topic=%2Fsdk_nrf5_v16.0.0%2Flib_dfu_transport_serial.html&amp;cp=6_1_3_5_2_3">DFU protocol - Serial</a>, which may help you implement serial DFU from another microcontroller. Is this what you are looking for?</p> <p>Best regards,</p> <p>Simon</p><div style="clear:both;"></div>