https://devzone.nordicsemi.com/f/nordic-q-a/62164/in-dfu-facing-issue-in-debug-mood-while-activating-new-firmware-image-with-nordic-sdk-16-0-0Hello, currently i am using nRF52832 board with Nordic SDK 16.0.0 and softdevice version 7.0.1 i have separated DFU service and bootloader code. added dfu service in my application and remove dfu functionality from bootloader so my application isen-USTelligent Community 13Thu, 04 Jun 2020 12:43:53 GMThttps://devzone.nordicsemi.com/thread/253290?ContentTypeID=1Thu, 04 Jun 2020 12:43:53 GMT137ad170-7792-4731-bb38-c0d22fbe4515:59841ddd-399b-4d79-89ef-74b47c3698c4Einar Thorsrud<p>Hi,</p> <p>Summing up, this works with release builds and debug builds when you are debugging, but fails with debug builds when a debugger is not attached. Is that correct? What constitutes a debug build in your project? No compiler optimization? Other changes?</p> <p>I would not expect a difference in this case, and it is hard to check what is going on since the issue is only reproduced when not debugging. There could be several explanations, for instance, similar to <a href="https://devzone.nordicsemi.com/f/nordic-q-a/7714/code-runs-in-debugger-but-not-on-power-up/27485#27485">this</a>.</p> <p>By the way, are you debugging the bootloader or application in this case?</p><div style="clear:both;"></div>