https://devzone.nordicsemi.com/f/nordic-q-a/39092/nrf52840-dongle-issueHello Nordic team I am working on &quot;ble_app_uart_pca10056_s140&quot; SDK V-15.2. IDE: Segger Embedded Studio. After compiling above project I am trying to download two files &quot;softdevice&quot; and &quot;application&quot; via nRFConnect PC application but after successfullyen-USTelligent Community 13Tue, 02 Oct 2018 10:29:33 GMThttps://devzone.nordicsemi.com/thread/151196?ContentTypeID=1Tue, 02 Oct 2018 10:29:33 GMT137ad170-7792-4731-bb38-c0d22fbe4515:9d7190cd-3b02-4ffb-a94b-466bd02a7cc4AndreasF<p>Hi Raj.</p> <p>Have you looked at the <a href="http://infocenter.nordicsemi.com/index.jsp?topic=%2Fcom.nordic.infocenter.nrf52%2Fdita%2Fnrf52%2Fdevelopment%2Fnrf52840_dongle%2Fgetting_started.html&amp;anchor=getting_started">Getting Started Guide</a> and <a href="http://infocenter.nordicsemi.com/index.jsp?topic=%2Fcom.nordic.infocenter.nrf52%2Fdita%2Fnrf52%2Fdevelopment%2Fnrf52840_dongle%2Fprogramming.html">Programming Guide</a> for the nRF52840 Dongle?</p> <p>To program the Dongle, it must be in bootloader mode.</p> <p>If you want to program the <strong>ble_app_uart_pca10056_s140.hex</strong>:</p> <p>1.Put it in bootloader mode as the programming guide shows.</p> <p>2. Open nRF Connect Programmer.</p> <p>3. Add the application .hex file and the S140 SoftDevice hex file:</p> <p>ble_app_uart_pca10056_s140.hex</p> <p>s140_nrf52_6.1.0_softdevice.hex</p> <p>4. If LD2 on the Dongle still pulses red, simply take the Dongle in and out of the USB port.</p> <p>You should then be able to see the Nordic_UART application in nRF Connect on your mobile phone advertising.</p> <p>You do not need to merge any files.</p> <p>- Andreas</p><div style="clear:both;"></div>