https://devzone.nordicsemi.com/f/nordic-q-a/59046/how-to-develop-the-uart-bootloader-function-of-nrf52832When debuging nrf52832 , the code can be flashed into the flash through JTAG . However , I need to reprogramme the nrf52832 through UART interface . It seems that there is no bootloader example in SDK ,as shown in picture 1. . How to develop the UARTen-USTelligent Community 13Fri, 13 Mar 2020 13:59:19 GMThttps://devzone.nordicsemi.com/thread/239754?ContentTypeID=1Fri, 13 Mar 2020 13:59:19 GMT137ad170-7792-4731-bb38-c0d22fbe4515:8b8a76b5-0a4d-4fbe-a841-2603db212080Edvin<p>The bootloader example is found in SDK16.0.0\examples\dfu\secure_bootloader\pca10040_uart.</p> <p>Please take a look at <a href="https://devzone.nordicsemi.com/nordic/nordic-blog/b/blog/posts/getting-started-with-nordics-secure-dfu-bootloader" rel="noopener noreferrer" target="_blank">this guide</a>. I know it is written for an older SDK, and for using the BLE bootloader, but the description is more or less the same. The only difference is that you will use nrfutil to transfer the file, instead of nRF Connect.</p> <p>Please check out the <a href="https://infocenter.nordicsemi.com/topic/ug_nrfutil/UG/nrfutil/nrfutil_dfu_serial.html" rel="noopener noreferrer" target="_blank">documentation on Infocenter</a> on how to transfer the images using DFU.</p> <p></p> <p>Best regards,</p> <p>Edvin</p><div style="clear:both;"></div>