https://devzone.nordicsemi.com/f/nordic-q-a/16897/noticeable-difference-between-sdk12-0-0-and-sdk12-1-0Hi, I just did a quick diff using these two commands &gt; find nRF5_SDK_12.0.0_12f24da/ -type f | grep --text -v -e &quot;c$&quot; -e &quot;h$&quot; -e &quot;s$&quot; | sed &#39;s/.*\///&#39; | sort -u &gt; exclude_list &gt; diff nRF5_SDK_12.0.0_12f24da nRF5_SDK_12.1.0_0d23e2a -r --ignoreen-USTelligent Community 13Thu, 06 Oct 2016 10:41:01 GMThttps://devzone.nordicsemi.com/thread/64718?ContentTypeID=1Thu, 06 Oct 2016 10:41:01 GMT137ad170-7792-4731-bb38-c0d22fbe4515:f9f3f166-317a-4e3a-a893-8bd8d75e989aSusheel Nuguru<p>Here is the diff patch.</p> <p><a href="https://devzone.nordicsemi.com/cfs-file/__key/communityserver-discussions-components-files/4/diff_5F00_SDK12.0_5F00_SDK12.1.patch">diff_SDK12.0_SDK12.1.patch</a></p> <p>Even though SDK12.1.0 was to give support to the serialization so that nRFConnect can be supported, there are few commits to nrf_drivers and addition of errata_108 in system_nrf52.c file.</p><div style="clear:both;"></div>