https://devzone.nordicsemi.com/f/nordic-q-a/77452/nrf52840-dk-buttonless-dfuI am trying to implement the buttonless dfu example, I successfully managed to upload the template example examples\ble_peripheral\ble_app_buttonless_dfu and can see it advertising &quot;Nordic Buttonless&quot; and I connect to it with nrfConnect on my phone buten-USTelligent Community 13Wed, 14 Jul 2021 16:15:36 GMThttps://devzone.nordicsemi.com/thread/320097?ContentTypeID=1Wed, 14 Jul 2021 16:15:36 GMT137ad170-7792-4731-bb38-c0d22fbe4515:77d45637-ba4f-4efe-a08a-8df43712b613devtty<p>Thanks! I had already gone through that a couple times (I should have mentioned that). The issue I had was actually solved here:</p> <p></p> <p><a href="https://devzone.nordicsemi.com/f/nordic-q-a/34514/buttonless-dfu-example-sdk15---no-dfu-service">https://devzone.nordicsemi.com/f/nordic-q-a/34514/buttonless-dfu-example-sdk15---no-dfu-service</a></p> <p></p> <p>All I had to do on my<span>&nbsp;iphone was clear the cache by toggling flight mode enable. Then I could finally see the DFU service.</span></p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/319989?ContentTypeID=1Wed, 14 Jul 2021 11:44:18 GMT137ad170-7792-4731-bb38-c0d22fbe4515:d6539adf-0863-4d19-b35c-09d63a63689bMarjeris Romero<p>Hi,</p> <p>Please take a look at this guide for &#39;<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 botloader</a>&#39;.</p> <p>Best regards,</p> <p>Marjeris</p><div style="clear:both;"></div>