https://devzone.nordicsemi.com/f/nordic-q-a/38275/sw-hw-compatibilityHello there, In this link, there is a table saying which version of SDK and SoftDevice may be used with any IC revision: http://infocenter.nordicsemi.com/index.jsp?topic=%2Fcom.nordic.infocenter.nrf52%2Fdita%2Fnrf52%2Fcompatibility_matrix%2Fic_rev_sdk_sd_comp_matrixen-USTelligent Community 13Fri, 07 Sep 2018 09:15:49 GMThttps://devzone.nordicsemi.com/thread/147738?ContentTypeID=1Fri, 07 Sep 2018 09:15:49 GMT137ad170-7792-4731-bb38-c0d22fbe4515:c8fc2fcf-c66a-4d1a-8724-86deb8f0b019Sigurd<p>Hi,</p> [quote userid="73181" url="~/f/nordic-q-a/38275/sw-hw-compatibility"]Or only the listed versions of SDK and SD can work with the respected IC revision?[/quote] <p>That is correct. For&nbsp;<span>Engineering C; 1; 2 we list that SDK 11 to 14.2 is&nbsp;compatible. For e.g. SDK 14.2, S132 v.5.0.x and 5.1.0 is&nbsp;compatible with that SDK.</span></p> [quote userid="73181" url="~/f/nordic-q-a/38275/sw-hw-compatibility"]For example, does SDK15.0 work with Engineering C?[/quote] <p>No, SDK 15.0 is&nbsp;compatible wtih IC rev 1/2, and S132 v.6.0.0</p><div style="clear:both;"></div>