https://devzone.nordicsemi.com/f/nordic-q-a/122103/dfu-failed-on-nrf5340-flash-write-failed-12-with-slot_index_primary-1-app-core-only-fota-internal-flash-ncs-v2-9-1Hi, I&#39;m working on enabling **FOTA for the application core only** on **nRF5340**, based on the **`nrf5340_audio` example**, using **only internal flash** (no external flash, no net core updates). I understand that multi-image DFU is generally recommendeden-USTelligent Community 13Wed, 11 Jun 2025 18:25:12 GMThttps://devzone.nordicsemi.com/thread/538895?ContentTypeID=1Wed, 11 Jun 2025 18:25:12 GMT137ad170-7792-4731-bb38-c0d22fbe4515:c68dd19c-64cb-4bc2-927d-1f92915a1d65Menon<p>Hello,</p> <p>I will take a closer look into the issue. Can you share the complete log from the nRF side while running the application and during the DFU?</p> <p>Kind regards,<br /> Abhijith</p><div style="clear:both;"></div>