https://devzone.nordicsemi.com/f/nordic-q-a/799/flash-reprogram-via-air-nrf51822Hi, is possible to reprogram flash in nRF51822 via radio channel? If yes - is there application note for this feature Some customer want to secure upload firmware without electrical connection to SoC Thanks in advance Best regards Arkadiusz Sen-USTelligent Community 13Thu, 31 Oct 2013 09:32:42 GMThttps://devzone.nordicsemi.com/thread/3993?ContentTypeID=1Thu, 31 Oct 2013 09:32:42 GMT137ad170-7792-4731-bb38-c0d22fbe4515:26a16260-30ab-4c04-af94-0f7b05117d32Ole Morten<p>There isn&#39;t an application note as such, but in the latest versions of the SDK there is a bootloader example that should be useful for this. You can also have a look on its documentation <a href="https://devzone.nordicsemi.com/documentation/nrf51/4.4.1/html/group__ble__sdk__bootloader.html">here</a>.</p><div style="clear:both;"></div>