https://devzone.nordicsemi.com/f/nordic-q-a/4355/programm-application-and-stack-but-nothing-happensWhat I`m using: -nRF51422 EK -Keil v5 -nRFGo Studio 1.17.1 -SDK 6.0 and 6.1 -SoftDevice S110 v 7.1 -Applicatio: ble_app_hrs I first Programm the SoftDevice Softdevice C:/Users/Administrator/Downloads/s110_nrf51822_7.1.0_softdevice.hex programmeden-USTelligent Community 13Thu, 06 Nov 2014 15:31:53 GMThttps://devzone.nordicsemi.com/thread/15494?ContentTypeID=1Thu, 06 Nov 2014 15:31:53 GMT137ad170-7792-4731-bb38-c0d22fbe4515:d03af82e-1aa0-4a72-9cc3-93a5805432bbInspectron<p>Your hex file is working. Thank you very much. I don<code>t why mine didn</code>t</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/15493?ContentTypeID=1Thu, 06 Nov 2014 15:26:01 GMT137ad170-7792-4731-bb38-c0d22fbe4515:02e54535-93c8-4fd1-8069-1398d4f2692aAsbj&#248;rn<p>I&#39;m not sure if you are programming the correct application hex file. My SDK 6.1 installation has the below structure to the hex file for the ble_app_hrs.hex. Make sure you have compiled the correct project in Keil and that you have a build folder under the project.</p> <p>I just tested the attached hex-file to make sure this one is ok. So in the application programming, use this one to test.</p> <p>C:/Nordic Semiconductor/nRF51 SDK/nrf51_sdk_v6_1_0_b2ec2e6/nrf51822/Board/pca10001/s110/ble_app_hrs/arm/_build/ble_app_hrs.hex</p> <p>Hex file for ble_app_hrs.hex<a href="https://devzone.nordicsemi.com/cfs-file/__key/communityserver-discussions-components-files/4/ble_5F00_app_5F00_hrs.hex">ble_app_hrs.hex</a></p><div style="clear:both;"></div>