https://devzone.nordicsemi.com/f/nordic-q-a/29285/mcp-no-command-complete-error-receivedHello, I&#39;ve the nRF51 DK which works fine because I managed to upload BLE Softdevice and application with nRFgo Studio. But I cannot get the MCP (Master Control Panel) working. I&#39;ve tried all the solutions found in the forum but nothing solves theen-USTelligent Community 13Tue, 09 Jan 2018 17:14:24 GMThttps://devzone.nordicsemi.com/thread/116479?ContentTypeID=1Tue, 09 Jan 2018 17:14:24 GMT137ad170-7792-4731-bb38-c0d22fbe4515:d7583443-4676-4344-a5fd-774200f29090JohnM<p>thanks Hung for your comments. I didn&#39;t know MCP was deprecated so I will cease to use it and move to nRFConnect (which works fine on Andriod for me so I guess on PC as well)</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/116480?ContentTypeID=1Tue, 09 Jan 2018 11:21:54 GMT137ad170-7792-4731-bb38-c0d22fbe4515:94084459-78e7-43a4-b186-bd53412b77d5Hung Bui<p>Have you flash the nRF51 DK with the firmware needed for Master Control Panel ? (click File -&gt; Flash Programming)</p> <p>Have you tested and make sure UART works fine with the DK ? You can test with the uart peripheral example in the SDK.</p> <p>Please be aware that Master Control Panel is deprecated and replaced with nRFConnect for PC application, it&#39;s advised to use the new application.</p><div style="clear:both;"></div>