https://devzone.nordicsemi.com/f/nordic-q-a/54607/ota-dfu-application-firmware-by-ble-central-deviceI want to upgrade a BLE peripheral firmware (nrf52840) by using another nrf52840 as BLE central. Do you have any idea how I can do that? I know how to use android to upgrade the ble peripheral, but I have no idea how to do it by a nrf52840. Is thereen-USTelligent Community 13Mon, 16 Mar 2020 00:54:51 GMThttps://devzone.nordicsemi.com/thread/239853?ContentTypeID=1Mon, 16 Mar 2020 00:54:51 GMT137ad170-7792-4731-bb38-c0d22fbe4515:e36c134c-7bec-4c67-9b5e-5490f7952cb4Duy<p>Hi Chapman,</p> <p>You can have a look at <a href="https://devzone.nordicsemi.com/f/nordic-q-a/54731/make-ble-central-send-firmware-to-dfu-bootloader">this similar thread</a>, hope it will work for you.</p> <p>Best regards,</p> <p>&nbsp; &nbsp; duy</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/221020?ContentTypeID=1Wed, 20 Nov 2019 10:25:51 GMT137ad170-7792-4731-bb38-c0d22fbe4515:a7cc53cf-3883-45fd-97ac-7143b5a7eb82bjorn-spockeli<p>HI Chapman.&nbsp;</p> <p>I am afraid that we do not have any examples that implement a DFU controller on a nRF52 device, we only have DFU Target examples.&nbsp;</p> <p>You can find the documentation on the DFU Protocol over BLE on our Infocenter, see <a title="DFU protocol" href="https://infocenter.nordicsemi.com/topic/sdk_nrf5_v16.0.0/lib_dfu_transport.html?cp=6_1_3_5_2">DFU protocol</a>&nbsp;and <a title="BLE" href="https://infocenter.nordicsemi.com/topic/sdk_nrf5_v16.0.0/lib_dfu_transport_ble.html?cp=6_1_3_5_2_2">BLE Transport Layer</a>. This includes Message Sequence diagrams that are very usefull, see&nbsp;<a title="Message sequence charts" href="https://infocenter.nordicsemi.com/topic/sdk_nrf5_v16.0.0/lib_dfu_transport_ble.html?cp=6_1_3_5_2_2_3#lib_dfu_transport_msc">Message sequence charts</a>.</p> <p>Best regards</p> <p>Bjørn</p><div style="clear:both;"></div>