https://devzone.nordicsemi.com/f/nordic-q-a/44547/can-t-update-bootloader-otaHello! I&#39;m trying to update the bootloader of a nRF52 device OTA. We are using SDK 12.3. The device has our own application flashed, along with what is essentially the bootloader example, and we are able to update the app OTA. However, we&#39;re failingen-USTelligent Community 13Fri, 08 Mar 2019 15:02:40 GMThttps://devzone.nordicsemi.com/thread/175083?ContentTypeID=1Fri, 08 Mar 2019 15:02:40 GMT137ad170-7792-4731-bb38-c0d22fbe4515:9e0536cc-44d3-4101-90a1-c3c33f0c5a7cEdvin<p>Hello,</p> [quote user=""] without merging the bootloader settings (should we merge them?)[/quote] <p>No, not the bootloader that you intend to update to.</p> <p>&nbsp;&quot;bootloader-version our_version&quot;. Is &quot;our_version&quot; a number? Is it higher than the previous number?</p> <p></p> <p>Does it look like the DFU image is transferred before it starts acting weird?</p> <p>Can you try flashing it using nrfutil? The command is described here:</p> <p><a href="https://www.nordicsemi.com/DocLib/Content/User_Guides/nrfutil/latest/UG/nrfutil/nrfutil_dfu_ble">https://www.nordicsemi.com/DocLib/Content/User_Guides/nrfutil/latest/UG/nrfutil/nrfutil_dfu_ble</a></p> <p></p> <p>Best regards,</p> <p>Edvin</p><div style="clear:both;"></div>