https://devzone.nordicsemi.com/f/nordic-q-a/4515/program-can-damage-ble4-0Hi Nordic I do not know why sometimes program can build pass in keil ,but can make nrf51822 do not work and unable download program . For this , I have damaged a lot of nrf51822 IC .please tell me why and how to avoid this problem . I am lookingen-USTelligent Community 13Thu, 04 Dec 2014 03:11:15 GMThttps://devzone.nordicsemi.com/thread/16020?ContentTypeID=1Thu, 04 Dec 2014 03:11:15 GMT137ad170-7792-4731-bb38-c0d22fbe4515:48de78df-499a-4172-ae9e-f1f090106e2fwiki<p>Hi Asbjørn</p> <p>I have attached my project ,and you can try it . Thanks!</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/16021?ContentTypeID=1Mon, 24 Nov 2014 07:49:26 GMT137ad170-7792-4731-bb38-c0d22fbe4515:02b028a3-abef-47b8-9a9e-5d3d5b9b80b7wiki<p>Hi Nordic</p> <p>Thank you for you help .</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/16019?ContentTypeID=1Wed, 19 Nov 2014 12:53:16 GMT137ad170-7792-4731-bb38-c0d22fbe4515:2bd21060-e1ab-409b-81d1-7bdcd76d2d25Asbj&#248;rn<p>Have you tried using the &quot;Recover&quot; function in nRFgo studio? The same feature is available in nrfjprog. Could you try this and see if you&#39;re able to connect to the boards you have?</p> <p>I would also recommend you to have a look at the suggestion and explanation <a href="https://devzone.nordicsemi.com/question/631/cannot-recover-with-nrfgo-could-not-read-ahb-ap-id-could-not-connect-to-target/">described in this post.</a></p><div style="clear:both;"></div>