https://devzone.nordicsemi.com/f/nordic-q-a/15934/initializing-soft-device-modesHi! In my teamwork we are developing an application for use a sensor module via spi, and share data and comunicate with other devices via Bluetooth. I&#39;ve taken care of the spi part, so I don&#39;t have much knowledge about Soft Device and BLE. Myen-USTelligent Community 13Tue, 23 Aug 2016 23:42:25 GMThttps://devzone.nordicsemi.com/thread/60783?ContentTypeID=1Tue, 23 Aug 2016 23:42:25 GMT137ad170-7792-4731-bb38-c0d22fbe4515:134f6957-272a-410e-8042-e39d4b2aab9dRK<p>No the softdevice is quite capable of operating with flash writes, and the fstorage library is of course compatible with the softdevice, or it wouldn&#39;t be very useful. I rather doubt you are jumping back a few lines, seems more likely you&#39;re resetting and starting over at the top of your code entirely.</p> <p>You need to post more details about what&#39;s happening, you need to check your app_error_handler() to see if you are ending up in there due to a function returning an error.</p><div style="clear:both;"></div>