https://devzone.nordicsemi.com/f/nordic-q-a/77199/central-ble-dfu-nrf52-deviceHi, What we would like to do is to store the firmware on one nRF52 MCU and do the DFU over BLE to the other nRF52 MCU. This means that the first nRF52 MCU needs to connect to the second one, then communicate with the DFU characteristics to send it toen-USTelligent Community 13Fri, 09 Jul 2021 11:23:07 GMThttps://devzone.nordicsemi.com/thread/319343?ContentTypeID=1Fri, 09 Jul 2021 11:23:07 GMT137ad170-7792-4731-bb38-c0d22fbe4515:5c559f29-1034-4029-9ebe-52ce29fec484Vojislav<p>Hi tesc,<br /><br /></p> <p>That is good news, will check it out, thanks!<br /><br />In the meantime, I will open a new private issue so we can discuss this problem further.<br /><br />Best regards,<br />Vojislav.</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/319134?ContentTypeID=1Thu, 08 Jul 2021 11:24:00 GMT137ad170-7792-4731-bb38-c0d22fbe4515:b77ce9fa-a54f-405d-9897-1e864de4c45ftesc<p>Hi,</p> <p>While not part of the SDK, we do have some example code for this as part of <a href="https://devzone.nordicsemi.com/nordic/short-range-guides/b/software-development-kit/posts/getting-started-with-nordics-secure-dfu-bootloader">Getting started with Nordic&#39;s Secure DFU bootloader, a step by step guide</a>. See the <a href="https://devzone.nordicsemi.com/nordic/short-range-guides/b/software-development-kit/posts/getting-started-with-nordics-secure-dfu-bootloader#h108sjziaxo3m81rkgr1has5r1d72qtu">DFU Master code</a> section, which links to code for an nRF side DFU Controller.</p> <p>Regards,<br />Terje</p><div style="clear:both;"></div>