https://devzone.nordicsemi.com/f/nordic-q-a/15926/rtt-viewer-5-12fI connected with RTT Viewer 5.12f with nrf51 DK board. while I donwload firmware to the board, I got bunch of error message from RTT viewer..and it stop..sometime the download finished, but it took lot of time. And in the RTT viewer, bunch of terminalen-USTelligent Community 13Tue, 23 Aug 2016 17:46:00 GMThttps://devzone.nordicsemi.com/thread/60760?ContentTypeID=1Tue, 23 Aug 2016 17:46:00 GMT137ad170-7792-4731-bb38-c0d22fbe4515:cb258c87-9b3a-4e8f-9ec6-812482640cf3Ole Bauck<p>Can you try to download and use the newest jlink (6.00g), download <a href="https://www.segger.com/downloads/jlink#">here</a> (J-Link Software and Documentation Pack)?</p><div style="clear:both;"></div>