Serialization: sd_ble_enable return NRF_ERROR_INVALID_STATEhttps://devzone.nordicsemi.com/f/nordic-q-a/17528/serialization-sd_ble_enable-return-nrf_error_invalid_stateHello, I have a serialized app I&#39;m porting to SDK 11 and the S130 SD. This is an STM32 serialized to an nRF51. When I call sd_ble_enable(...) for the first time at initialization time, I get a return error of NRF_ERROR_INVALID_STATE. The docsen-USTelligent Community 13Sat, 05 Nov 2016 19:07:58 GMTRE: Serialization: sd_ble_enable return NRF_ERROR_INVALID_STATEhttps://devzone.nordicsemi.com/thread/67393?ContentTypeID=1Sat, 05 Nov 2016 19:07:58 GMT137ad170-7792-4731-bb38-c0d22fbe4515:f655ad07-002e-4f74-bb05-34c73c2e0f5cTBone<p>I solved the issue by lengthening the delay from reset until sd_ble_enable is called from 500 ms to 1000 ms.</p><div style="clear:both;"></div>