https://test-devzone.nordicsemi.com/f/nordic-q-a/88319/overlay-folder-structureHi, as am following below link for DFU-OTA . i was able to perform it. https://devzone.nordicsemi.com/f/nordic-q-a/83402/ncs1-8-0-52840-mcuboot-spi-external-flash-can-t-build-pass However in the link @ H&#229;kon Alseth mentioned to move &quot;hello_world_spi_nor_ext_flashen-USTelligent Community 13 Non-ProductionThu, 02 Jun 2022 12:31:35 GMThttps://test-devzone.nordicsemi.com/thread/370694?ContentTypeID=1Thu, 02 Jun 2022 12:31:35 GMT137ad170-7792-4731-bb38-c0d22fbe4515:6c2ac634-dd01-4da7-90fa-9b908c769776user107732<p>Hi,</p> <p>Sorry for the delay. The path suggested by Håkon is the expected path for overlaying the sub-image. For re-configuring a multi-image, this always the go- to way..&nbsp;</p> <p>Regards,&nbsp;</p> <p>Swathy</p><div style="clear:both;"></div>https://test-devzone.nordicsemi.com/thread/370325?ContentTypeID=1Wed, 01 Jun 2022 05:57:56 GMT137ad170-7792-4731-bb38-c0d22fbe4515:42076966-aa86-4965-957d-47c2c65c9e91user106945<p>HI,</p> <p>&nbsp; &nbsp; Can you please update on this .</p><div style="clear:both;"></div>https://test-devzone.nordicsemi.com/thread/369792?ContentTypeID=1Fri, 27 May 2022 13:02:14 GMT137ad170-7792-4731-bb38-c0d22fbe4515:923eabe8-7c68-48c6-af46-08580c6fe1d4user107732<p>Hi,</p> <p>I will get back to you on monday.</p> <p>Regards,</p> <p>Swathy</p><div style="clear:both;"></div>