https://devzone.nordicsemi.com/f/nordic-q-a/15717/nrf51-with-insight-isp-130301Hi I try to program Insight ISP 130301 with a hex file, which works on nrf51 PCA10028. Unfortunately, it doesn&#39;t work. I try to loop for each pins and set it&#39;s state, and while it works well on development kit, nothing happens on ISP 130301. Does anyoneen-USTelligent Community 13Mon, 15 Aug 2016 12:34:40 GMThttps://devzone.nordicsemi.com/thread/59997?ContentTypeID=1Mon, 15 Aug 2016 12:34:40 GMT137ad170-7792-4731-bb38-c0d22fbe4515:70ba8851-aaa2-41b9-856d-5db9d7ea5177Astalos<p>Thanks for replying, I fixed it by configuring RAM size.</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/59996?ContentTypeID=1Mon, 15 Aug 2016 08:42:09 GMT137ad170-7792-4731-bb38-c0d22fbe4515:50ac7e46-077a-46e1-aafc-8154b71e148fPetter Myhre<p>Are you able to run a simple LED blinky example without a softdevice? This is a simple way of knowing whether the problems lies &quot;before or after programming&quot; or if it is e.g. a Softdevice, SDK and/or nRF51 revision incompatibillity issue.</p> <p>Are you able to read the chip markings on top of the nRF51 to determine what IC revision it is? Or maybe you can get them from nRFgo Studio? It should be something like QFACA10.</p> <p>What Softdevice version are you using?</p> <p>What SDK are you using?</p><div style="clear:both;"></div>