Is it possible to conduct an Over-The-Air Device-Firmware-Update (OTA DFU) of a peripheral BLE device using the nRF52 DK as the central device?https://devzone.nordicsemi.com/f/nordic-q-a/74009/is-it-possible-to-conduct-an-over-the-air-device-firmware-update-ota-dfu-of-a-peripheral-ble-device-using-the-nrf52-dk-as-the-central-deviceGiven a 3rd party BLE device (for example a fitness) watch, would it be possible to connect to it using the nRF52 DK and conduct a DFU on it? If so, is there any documentation by Nordic that I can reference? I&#39;ve already read this document that talksen-USTelligent Community 13Thu, 15 Apr 2021 12:09:03 GMTRE: Is it possible to conduct an Over-The-Air Device-Firmware-Update (OTA DFU) of a peripheral BLE device using the nRF52 DK as the central device?https://devzone.nordicsemi.com/thread/305087?ContentTypeID=1Thu, 15 Apr 2021 12:09:03 GMT137ad170-7792-4731-bb38-c0d22fbe4515:bc4abdf5-7dd3-4c65-845d-95cef5637102Vidar Berg<p>Hello,</p> <p>The nR52 can be programmed to operate as a central, connect to a given device, and start sending data to it. But whether it will be possible to do DFU will depend on how it&#39;s implemented on this 3rd party device.</p> <p>Do you have any additional information about the DFU implementation? E.g. if it uses an open or a proprietary transfer protocol, if it has any security mechanisms such as&nbsp;<span><a title="Signature verification" href="https://infocenter.nordicsemi.com/topic/sdk_nrf5_v17.0.2/lib_bootloader_dfu_validation.html?cp=7_1_3_5_1_1_2_3#lib_bootloader_signatures">Signature verification</a></span> that will prevent others from uploading FW on it, etc.. </p> <p>Details about the DFU protocol we use can be found here: <span><a title="DFU protocol" href="https://infocenter.nordicsemi.com/topic/sdk_nrf5_v17.0.2/lib_dfu_transport.html?cp=7_1_3_5_2">DFU protocol</a></span></p> <p></p> <p></p><div style="clear:both;"></div>