Hi,
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 @Håkon Alseth mentioned to move
"hello_world_spi_nor_ext_flash/child_image/mcuboot/nrf52840dk_nrf52840.overlay
To be in a "boards" catalog:
hello_world_spi_nor_ext_flash/child_image/mcuboot/boards/nrf52840dk_nrf52840.overlay "
After this modification only it worked, May i know the reason behind it ? what is happening in background ? and reason to do that.
Regardrs,
Shikamaru