Device returned error after sending init packet (error 6)https://devzone.nordicsemi.com/f/nordic-q-a/20453/device-returned-error-after-sending-init-packet-error-6This problem didn&#39;t appear every time when I upgrade firmware. If I restart my app again, sometime the SDK can works well. Anyone can help? I&#39;m use SDK in Android, Legacy DFU. Thks a lot.en-USTelligent Community 13Wed, 15 Mar 2017 11:55:41 GMTRE: Device returned error after sending init packet (error 6)https://devzone.nordicsemi.com/thread/79745?ContentTypeID=1Wed, 15 Mar 2017 11:55:41 GMT137ad170-7792-4731-bb38-c0d22fbe4515:064961cf-c848-404b-bd94-1790d8f1f5a5Hung Bui<p>Hi Licl,</p> <p>Can you capture <a href="https://www.nordicsemi.com/eng/Products/Bluetooth-Smart-Bluetooth-low-energy/nRF-Sniffer/">a sniffer trace</a> ?</p> <p>Which SDK version are you testing with ? Have you modified anything in the bootloader ? Have you tried to update using our example .zip file included in the app on Android (inside NordicSemiconductor folder)</p> <p>You shouldn&#39;t have any problem updating the same firmware.</p><div style="clear:both;"></div>RE: Device returned error after sending init packet (error 6)https://devzone.nordicsemi.com/thread/79744?ContentTypeID=1Tue, 14 Mar 2017 11:53:27 GMT137ad170-7792-4731-bb38-c0d22fbe4515:f60ddc5d-accf-420e-af8c-c1eb5646a1d1licl1008<p>By the way, for the test, I always upgrade same firmware file to a device again and again. It has effects on this error?</p><div style="clear:both;"></div>