https://devzone.nordicsemi.com/f/nordic-q-a/2062/nrf51822-upgrade-from-4-4-to-5-2-build-ok-flash-ok-but-stuck-on-runwww.dropbox.com/.../error.jpg it is not even reach main() same as devzone.nordicsemi.com/.../nrf51422-flashes-ok,-but-debugging-fails-stays-in-moves-r0,r0 is it related to target setting? www.dropbox.com/.../setting.jpg I try different combinationen-USTelligent Community 13Tue, 01 Apr 2014 23:56:41 GMThttps://devzone.nordicsemi.com/thread/8828?ContentTypeID=1Tue, 01 Apr 2014 23:56:41 GMT137ad170-7792-4731-bb38-c0d22fbe4515:9f87269f-6553-4a00-adba-c53810246e8ajulian<p>found, it is the big endian should be uncheck</p><div style="clear:both;"></div>