https://devzone.nordicsemi.com/f/nordic-q-a/92960/smp-server-authentication-is-insufficientDear all. I am testing SMP server example with the nRF52832DK kit. I did what described here FOTA over BLE . In step3, the app nRF Connect for Mobile reported failure: Authentication is insufficient. So there must be something wrong with my app_updateen-USTelligent Community 13Sat, 22 Oct 2022 03:10:54 GMThttps://devzone.nordicsemi.com/thread/391973?ContentTypeID=1Sat, 22 Oct 2022 03:10:54 GMT137ad170-7792-4731-bb38-c0d22fbe4515:842c7768-d928-4fcd-a47c-ed25c886b67ebinhla<p>Dears,</p> <p>Thank you for your prompt response.</p> <p>The issue is solved after I made these config</p> <p><pre class="ui-code" data-mode="text"># MCU mgr CONFIG_MCUMGR_SMP_BT=y CONFIG_MCUMGR_SMP_BT_AUTHEN=n CONFIG_MCUMGR_SMP_BT_CONN_PARAM_CONTROL=y # Allow for large Bluetooth data packets. CONFIG_BT_L2CAP_TX_MTU=498 CONFIG_BT_BUF_ACL_RX_SIZE=502 CONFIG_BT_BUF_ACL_TX_SIZE=502 CONFIG_BT_CTLR_DATA_LENGTH_MAX=251</pre></p> <p></p> <p>Best regards.</p> <div id="eJOY__extension_root" class="eJOY__extension_root_class"></div><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/391147?ContentTypeID=1Tue, 18 Oct 2022 09:52:56 GMT137ad170-7792-4731-bb38-c0d22fbe4515:5a2296eb-bf53-4719-ba0d-7f87fc5ff148Vidar Berg<p>Hello,</p> <p>Please make sure&nbsp;<a href="https://developer.nordicsemi.com/nRF_Connect_SDK/doc/2.1.0/kconfig/index.html#CONFIG_MCUMGR_SMP_BT_AUTHEN">CONFIG_MCUMGR_SMP_BT_AUTHEN</a> is disabled in your project .conf files. Otherwise, you have to modify the example to support authentication.</p> <p>Best regards,</p> <p>Vidar</p><div style="clear:both;"></div>