https://devzone.nordicsemi.com/f/nordic-q-a/4790/can-t-program-softdevice-5-2-1-into-nrf51822-using-keilI have a custom board with an nrf51822 device. I also have Keil 5.12 and a ULINK2 and would like to program softdevice hex file into the nrf device. I have followed all of the documentation on the subject and yet I get the following: Load &quot;D:\Projectsen-USTelligent Community 13Fri, 09 Jan 2015 14:31:49 GMThttps://devzone.nordicsemi.com/thread/16967?ContentTypeID=1Fri, 09 Jan 2015 14:31:49 GMT137ad170-7792-4731-bb38-c0d22fbe4515:9cebf1ab-8988-405f-9213-b3f9f929b721mac<p>Thanks, I have switched from a ULINK to another J-Link device and I am now able to program the device using nRFgoStudio</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/16966?ContentTypeID=1Thu, 11 Dec 2014 13:39:03 GMT137ad170-7792-4731-bb38-c0d22fbe4515:ddceb386-c245-47ec-a299-eb28661705d3H&#229;kon Alseth<p>Hi,</p> <p>This procedure is not possible with SoftDevice versions that rely on settings in register UICR. It will only work with S110 v6 or newer.</p> <p><em>edit</em> This is because the flashing algorithm in Keil does not have access to the UICR area. You&#39;ll have to use nrfjprog to program this area, which only works on Segger based debuggers.</p> <p>Best regards, Håkon</p><div style="clear:both;"></div>