https://devzone.nordicsemi.com/f/nordic-q-a/45068/error-while-re-programming-nrf51422-dkHello, Please can someone help me to undrestand this error while running other exemples in my nrf 51 DK with nrf 51422 PS: IDE : Segger Embedded Studio SDK : NRF5_SDK_15.xxx Thanks.en-USTelligent Community 13Mon, 15 Apr 2019 08:21:27 GMThttps://devzone.nordicsemi.com/thread/182016?ContentTypeID=1Mon, 15 Apr 2019 08:21:27 GMT137ad170-7792-4731-bb38-c0d22fbe4515:28d4a7ed-7eda-4d78-8a41-c5900b6f973bJoseph Ayuk<p>Yeah that is the latest SDK supported by the NRF51 series <a href="https://devzone.nordicsemi.com/members/ammar_5f00_ah">Ammar_AH</a>. You should check&nbsp; the compatibility matrix for more information.</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/177112?ContentTypeID=1Tue, 19 Mar 2019 14:59:15 GMT137ad170-7792-4731-bb38-c0d22fbe4515:e52f8458-e2e0-40cc-9d67-30f6ccb963ceJared<p>Hi,</p> <p>SDK 15 is not supported by nRF51. The latest SDK that supports nRF51 is SDK 12.x.x</p> <p>Best regards</p> <p>Jared</p><div style="clear:both;"></div>