https://devzone.nordicsemi.com/f/nordic-q-a/73461/nrf9160-fota-over-bt-smpHi Iam using NCS version 1.5.0 and DK version 0.15.0 Is it even possible to perform FOTA over SMP BT on NRF9160?I am using 840 as my controller and normal ble functionalities are working fine.if so is there any example application? Thanks in advaen-USTelligent Community 13Wed, 07 Apr 2021 09:04:42 GMThttps://devzone.nordicsemi.com/thread/303405?ContentTypeID=1Wed, 07 Apr 2021 09:04:42 GMT137ad170-7792-4731-bb38-c0d22fbe4515:a52038b1-08e1-4499-aa92-aff6a8de2833Carl Richard<p>Hello!<br /><br />This should&nbsp;be possible. I suggest that you try out the <a href="https://developer.nordicsemi.com/nRF_Connect_SDK/doc/latest/zephyr/samples/subsys/mgmt/mcumgr/smp_svr/README.html">Zephyr SMP server example</a>, but make sure to make the necessary changes so that the nRF9160 is supported as BT host. Some additional changes to the prj.conf may be required for this to work, so if you face any issues you can try the following configuration, which is confirmed to work with the nRF52840:<br /><pre class="ui-code" data-mode="c_cpp">CONFIG_BT_L2CAP_TX_MTU=252 CONFIG_BT_L2CAP_RX_MTU=252 CONFIG_BT_RX_BUF_LEN=260 # Add the immutable bootloader CONFIG_SECURE_BOOT=y # Add MCUBoot as second-stage BL CONFIG_BOOTLOADER_MCUBOOT=y # Add MCUMGR for DFU over BLE CONFIG_MCUMGR=y CONFIG_MCUMGR_CMD_OS_MGMT=y CONFIG_MCUMGR_CMD_IMG_MGMT=y CONFIG_MCUMGR_SMP_BT=y # TODO: remove this, only for debug CONFIG_MCUMGR_SMP_BT_AUTHEN=n</pre><br /><br />Please notify me of you face any problems and good luck!<br /><br />Best regards,<br />Carl Richard</p><div style="clear:both;"></div>