https://devzone.nordicsemi.com/f/nordic-q-a/57941/ota-dfu-nrf52-master-to-slaveHi Nordics, I know it has been asked over and over again about doing DFU of slave nrf52 using a central nrf52. devzone.nordicsemi.com/.../ota-dfu-application-firmware-by-ble-central-device devzone.nordicsemi.com/.../ota-dfu-from-nrf52-to-nrf52 devzoneen-USTelligent Community 13Wed, 19 Feb 2020 04:11:18 GMThttps://devzone.nordicsemi.com/thread/235040?ContentTypeID=1Wed, 19 Feb 2020 04:11:18 GMT137ad170-7792-4731-bb38-c0d22fbe4515:7613e485-5a52-4037-9e67-0287df7ee94cPeteKcSum<p>ok, thx. will follow and see if it works.</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/234919?ContentTypeID=1Tue, 18 Feb 2020 13:02:13 GMT137ad170-7792-4731-bb38-c0d22fbe4515:1c51a584-5f44-403d-93dd-5205cca330c6Einar Thorsrud<p>Hi,</p> <p></p> [quote user=""]<p></p><p>There is no example, but i stumbled upon the following<br /><a href="https://infocenter.nordicsemi.com/index.jsp?topic=%2Fug_nrfutil%2FUG%2Fnrfutil%2Fnrfutil_dfu_ble.html">infocenter.nordicsemi.com/index.jsp</a></p><p>which seems to be&nbsp; using a BLE to update a nrf52 via PC . If it is , would it be possible to port this code over to an external MCU which controls the nrf master to perform a similar update ? thx.</p><p></p>[/quote] <p></p> <p>This uses SoftDevice serialization via pc-ble-driver to do the DFU, so it is not so&nbsp;relevant if you are using a non-Nordic MCU as DFU master. The closes would perhaps be this unofficial implementation: <a href="https://github.com/jimmywong2003/nrf-slim-serial-uart-dfu-host-c-code">Serial DFU Host Application (By using C programming language)</a>.</p><div style="clear:both;"></div>