https://devzone.nordicsemi.com/f/nordic-q-a/1254/s120-problemhi, first of all i need to say, i am very happy to found the s120 softdevice where we can implement the client role also i downloaded new alpha version of s120 softdevice and working with it, when burn the code of s120/experimental/ble_app_hrs_cen-USTelligent Community 13Mon, 06 Jan 2014 05:07:09 GMThttps://devzone.nordicsemi.com/thread/5794?ContentTypeID=1Mon, 06 Jan 2014 05:07:09 GMT137ad170-7792-4731-bb38-c0d22fbe4515:8671d423-ca2e-4c94-9176-5d56d2b231d8rangineni balu<p>hi, thaks for your reply,</p> <p>as i posted in <a href="https://devzone.nordicsemi.com/index.php/s120-starting#reply-3897">this question</a> my problem resolved, the problem is due to the old version of softdevice only, now i updated to the new version of softdevice now everything is fine.</p> <p>thanks and regards, rangineni balu</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/5793?ContentTypeID=1Fri, 03 Jan 2014 15:30:39 GMT137ad170-7792-4731-bb38-c0d22fbe4515:12662d0c-6b6d-4804-aa55-e57e602b6a89Ole Morten<p>You don&#39;t describe very well what you don&#39;t see working. On the evaluation kit, which softdevice version are you using? Do you see any of the LEDs light up? Have you tried running either project with the debugger, with a breakpoint in app_error_handler to see if you get any errors?</p><div style="clear:both;"></div>