https://devzone.nordicsemi.com/f/nordic-q-a/32890/known-issue-regarding-fds-peer-manager-in-sdk-14-2-solved-in-sdk-15Hi, In the Release Notes of SDK 14.2 the following issue (for an emulated NRF52810 project) is mentioned : *** Known Issues **************** ** BLE ** - When working on the emulated nRF52810 target, if you change the optimization level and/oren-USTelligent Community 13Mon, 16 Apr 2018 07:02:53 GMThttps://devzone.nordicsemi.com/thread/128387?ContentTypeID=1Mon, 16 Apr 2018 07:02:53 GMT137ad170-7792-4731-bb38-c0d22fbe4515:e675b1ca-dbe2-4122-a80a-5e82a2da1201Alex<p>Ok thanks</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/128183?ContentTypeID=1Fri, 13 Apr 2018 08:36:19 GMT137ad170-7792-4731-bb38-c0d22fbe4515:f4773afc-f5c2-4e6e-b020-cf21c6cdca36haakonsh<p>Hey Alex,&nbsp;<br /><br />Sorry for the late response. I&#39;ve talked to the SDK15 manager;&nbsp;<br /><br />&quot;Probably this is still true. &nbsp;The spectrum is too broad …We have not changed optimization and tested all examples as well.</p> <p>So for some of the examples, when optimization level is changed code might get written into FDS area.&quot;</p> <p>&nbsp;</p> <p>Cheers,</p> <p>Håkon.</p><div style="clear:both;"></div>