https://devzone.nordicsemi.com/f/nordic-q-a/11742/nrf51-dk-openocd-gdbSetup: Ubuntu14.04 ARM gcc version 4.8.4 20140725 OpenOCD 0.9 OpenOCD: openocd -f openocd/share/openocd/scripts/interface/jlink.cfg -c &quot;transport select swd&quot; -f openocd/share/openocd/scripts/target/nrf51.cfg GDB: arm-none-eabi-gdb -tui _builden-USTelligent Community 13Fri, 05 Feb 2016 23:33:43 GMThttps://devzone.nordicsemi.com/thread/44413?ContentTypeID=1Fri, 05 Feb 2016 23:33:43 GMT137ad170-7792-4731-bb38-c0d22fbe4515:b961e134-1a26-4df3-b9ec-528d9727a20bypearson<p>GDB appears to screw up softdevice calls.</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/44412?ContentTypeID=1Fri, 05 Feb 2016 01:06:28 GMT137ad170-7792-4731-bb38-c0d22fbe4515:c34ad81b-cac8-4aca-977a-052892443ffdypearson<p>I found the fix, apparently doing multiple resets via GDB fixes it:</p> <p>target extended-remote :3333 monitor reset init shell sleep 1 monitor reset init</p> <p>I don&#39;t do a &#39;load&#39; in GDB, I use the nrfjprog to program the softdevice + code</p><div style="clear:both;"></div>