https://devzone.nordicsemi.com/f/nordic-q-a/101889/how-to-enable-nrf5340-mcumgr-dfu-update-mechanismProcedure to reproduce this issue is as follows. 1. Unzipping minimal_log_nus.zip to D:\ncs\v2.3.0\nrf\samples folder. 2. cd D:\ncs\v2.3.0\nrf\samples\minimal_log_nus 3. west build -b nrf5340dk_nrf5340_cpuapp 4. west flash 5. Connecting Zephyr BT deviceen-USTelligent Community 13Mon, 17 Jul 2023 07:36:29 GMThttps://devzone.nordicsemi.com/thread/436651?ContentTypeID=1Mon, 17 Jul 2023 07:36:29 GMT137ad170-7792-4731-bb38-c0d22fbe4515:1a10bc6f-793f-4c94-8af5-897e2581b290Menon<p>Hello,</p> <p>Glad to hear that you can succeed in doing OTA DFU. I hope your issue in this case has been resolved.</p> <p>Kind Regards,</p> <p>Abhijith&nbsp;</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/436536?ContentTypeID=1Fri, 14 Jul 2023 14:33:00 GMT137ad170-7792-4731-bb38-c0d22fbe4515:9ac6fd7b-c4a1-4899-9251-9d718b2b6d33snowuyl<p>Thanks for your great support! I follow procedure mentions in <a href="https://devzone.nordicsemi.com/guides/nrf-connect-sdk-guides/b/software/posts/ncs-dfu">this blog post</a>. And I can do OTA update successfully with peripheral_lbs sample.</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/436506?ContentTypeID=1Fri, 14 Jul 2023 13:30:27 GMT137ad170-7792-4731-bb38-c0d22fbe4515:406f4df0-9083-46aa-ae16-e44f6d537e19Menon<p>Hello,</p> <p>&nbsp;Have you tried any official DFU sample? Can you try <a href="https://github.com/hellesvik-nordic/samples_for_nrf_connect_sdk/tree/main/bootloader_samples/smp/mcuboot_smp_ble">this sample</a> from my colleague and see whether the same is happening? Which version of iOS are you trying here? I guess there is some issue with the implementation you have followed. Have you followed all the steps mentioned in <a href="https://devzone.nordicsemi.com/guides/nrf-connect-sdk-guides/b/software/posts/ncs-dfu">this blog post</a>.</p> <p>Please see the <a href="https://github.com/hellesvik-nordic/samples_for_nrf_connect_sdk/blob/main/bootloader_samples/smp/mcuboot_smp_ble/prj.conf">prj:conf </a>file from one of the sample check whether you have included every required configurations.</p> <p>Kind Regards,</p> <p>Abhijith</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/436416?ContentTypeID=1Fri, 14 Jul 2023 08:44:31 GMT137ad170-7792-4731-bb38-c0d22fbe4515:88167391-0b32-4eb3-a792-7a18683f6ff0snowuyl<p><img style="max-height:240px;max-width:320px;" src="https://devzone.nordicsemi.com/resized-image/__size/640x480/__key/communityserver-discussions-components-files/4/DFU_5F00_not_5F00_support.png" alt=" " /></p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/436415?ContentTypeID=1Fri, 14 Jul 2023 08:42:59 GMT137ad170-7792-4731-bb38-c0d22fbe4515:d441a670-1e65-419f-a7de-a96f40ff49ddsnowuyl<p><a href="https://devzone.nordicsemi.com/cfs-file/__key/communityserver-discussions-components-files/4/3487.minimal_5F00_log_5F00_nus.zip">devzone.nordicsemi.com/.../3487.minimal_5F00_log_5F00_nus.zip</a></p><div style="clear:both;"></div>