https://devzone.nordicsemi.com/f/nordic-q-a/106461/minimal-smp-configurationHi, I have a project with the SMP enabled to do BLE OTA updates. The SMP is working well and I can upload firmware from a mobile app etc. The question I have is around the minimum configuration and flash usage. Part of the SMP is the filesystem anden-USTelligent Community 13Fri, 08 Dec 2023 12:58:01 GMThttps://devzone.nordicsemi.com/thread/459517?ContentTypeID=1Fri, 08 Dec 2023 12:58:01 GMT137ad170-7792-4731-bb38-c0d22fbe4515:816ae9ca-7876-4827-9ffd-36f5a435033bEinar Thorsrud<p>Hi,</p> <p>It seems like you have based your config on the&nbsp;<a href="https://developer.nordicsemi.com/nRF_Connect_SDK/doc/2.5.0/zephyr/samples/subsys/mgmt/mcumgr/smp_svr/README.html">smp_svr sample</a>. You may also find the DFU related sample collections my colleague have <a href="https://github.com/hellesvik-nordic/samples_for_nrf_connect_sdk/tree/main/bootloader_samples">here</a> relevant, particularily <a href="https://github.com/hellesvik-nordic/samples_for_nrf_connect_sdk/tree/main/bootloader_samples/smp/mcuboot_smp_ble">this one</a>, which is quite minimal and only includes what you need&nbsp;for DFU over BLE.</p> <p>Note that when you enable MCUboot, you will need parts of the&nbsp;flash for the bootloader, and the remaining flash will be split in half to have two application slots as that is needed for DFU. So if you have a large application, you may need to use external flash for the secondary slot.</p><div style="clear:both;"></div>