https://devzone.nordicsemi.com/f/nordic-q-a/15434/freertos-version-mixupHello I&#39;m using SDK nRF5_SDK_11.0.0_89a8197.zip and I find out that most freeRTOS file version is: &quot;FreeRTOS V8.2.1&quot; but &quot;external\freertos\config\FreeRTOSConfig.h&quot; is in version &quot;FreeRTOS V8.0.1&quot; thus some default configuration is missing - for exampleen-USTelligent Community 13Sat, 30 Jul 2016 17:25:05 GMThttps://devzone.nordicsemi.com/thread/58922?ContentTypeID=1Sat, 30 Jul 2016 17:25:05 GMT137ad170-7792-4731-bb38-c0d22fbe4515:dce8e11f-c003-497a-90ca-ef2201ff9ce7www.FreeRTOS.org<p>FreeRTOS versions are extremely rarely not backward compatible, so new FreeRTOSConfig.h parameters, which are <a href="http://www.freertos.org/a00110.html">described here</a>, will get defaulted if an older FreeRTOSConfig.h file is used. The default value will result in the behaviour that would be observed if the feature was not there. In fact it is very rare to have a FreeRTOSConfig.h file that contains a complete set of parameters.</p><div style="clear:both;"></div>