https://devzone.nordicsemi.com/f/nordic-q-a/127717/softdevice-and-fds-problemI am developing an application using nRF52833 + nRF5 SDK + S140, and I encountered a strange issue. When I perform an OTA update from a firmware that does not initialize the SoftDevice by default to a firmware that does initialize the SoftDevice by defaulten-USTelligent Community 13Mon, 13 Apr 2026 07:36:39 GMThttps://devzone.nordicsemi.com/thread/564827?ContentTypeID=1Mon, 13 Apr 2026 07:36:39 GMT137ad170-7792-4731-bb38-c0d22fbe4515:ac4091ec-bfa7-4a4c-b0a2-f3bc420f1eedLiny<p>Thanks, the issue has been identified. It was caused by closing the protocol stack before FDS finished initialization.</p><div style="clear:both;"></div>