https://devzone.nordicsemi.com/f/nordic-q-a/35210/dfu-over-uart-in-sdk-12-3Hi, I&#39;m using a nRF51822 on a custom board. I would like to implement serial DFU on it using the bootloader_secure example. 1.) Is serial dfu implemented in sdk 12.3 ? 2.) If yes, then how do I change the default RX/TX pins and baud rates? 3.en-USTelligent Community 13Fri, 08 Jun 2018 11:39:14 GMThttps://devzone.nordicsemi.com/thread/135349?ContentTypeID=1Fri, 08 Jun 2018 11:39:14 GMT137ad170-7792-4731-bb38-c0d22fbe4515:2dd67797-9c06-497d-b7fe-36a3574b8187Bj&#248;rn Kvaale<p>1) Serial DFU is not implemented in sdk 12.3</p> <p>2) See answer 1)</p> <p>3) Take a look at <a href="http://infocenter.nordicsemi.com/topic/com.nordic.infocenter.sdk5.v11.0.0/examples_ble_dfu.html?cp=4_0_9_4_3_1">this example</a> from sdk 11.</p><div style="clear:both;"></div>