https://devzone.nordicsemi.com/f/nordic-q-a/86692/smp-messages-in-already-configured-uart-exampleHello, I&#39;m using nRF52840 and nRF Connect. I&#39;ve customized hello_world sample from Zephyr to also work with mcumgr and receive and respond to SMP commands such as &quot;echo hello&quot; or &quot;image upload&quot; via serial connection. I would like to achieve same behavioren-USTelligent Community 13Wed, 06 Apr 2022 20:03:07 GMThttps://devzone.nordicsemi.com/thread/362178?ContentTypeID=1Wed, 06 Apr 2022 20:03:07 GMT137ad170-7792-4731-bb38-c0d22fbe4515:3ef12e6a-8519-4ee1-aa48-705ac4d08624Piotr Krygier<p>Found similar issue here:<br /><a href="https://devzone.nordicsemi.com/f/nordic-q-a/83696/sharing-uart-between-dfu-app">https://devzone.nordicsemi.com/f/nordic-q-a/83696/sharing-uart-between-dfu-app</a><br /><br />From what I understand, you cannot have serial communication between Nordic and another MCU with normal communication AND DFU via MCUMGR. That&#39;s too bad.</p><div style="clear:both;"></div>