https://devzone.nordicsemi.com/f/nordic-q-a/103485/dfu-fails-with-device-failed-to-boot-into-image-0I have a custom board, DFU was working fine and suddenly quit working. Developing on Windows 11, nRF Connect 2.3.0 Using Device Manager to upload and check the image. I connect to the device fine with Device manager and the image uploads. it then resetsen-USTelligent Community 13Wed, 06 Sep 2023 14:25:25 GMThttps://devzone.nordicsemi.com/thread/444754?ContentTypeID=1Wed, 06 Sep 2023 14:25:25 GMT137ad170-7792-4731-bb38-c0d22fbe4515:90c4834c-b1cc-45f4-bc88-4acb706d68b1finkbr<p>Hi, cant log, its too big to include logging.&nbsp; It had been working and suddenly stopped. Late last night it started working again.&nbsp; You can close the ticket.&nbsp; It would be great if the mordic device manager would log snd there was a list of what the errors meant.&nbsp; Failed to noot into image 0 is vague and impossible to troubleshoot.&nbsp;</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/444699?ContentTypeID=1Wed, 06 Sep 2023 11:32:52 GMT137ad170-7792-4731-bb38-c0d22fbe4515:542719e3-d733-467d-85d6-149ce5643b79Hung Bui<p>Hi Brian,&nbsp;</p> <p>Do you have any log from the device ? You maybe able to see some log on UART/RTT&nbsp;from MCUBoot.&nbsp;</p> <p>Could you try to erase the chip and flash the application to try again ?&nbsp;</p> <p>Please try testing with the SMP_SVR sample. Try uploading your application via OTA to replace smp_svr to see if it works.</p><div style="clear:both;"></div>