https://devzone.nordicsemi.com/f/nordic-q-a/74323/back-to-default-statusI have an nRF52840 - install the BLE Sniffer Software on it - play a littel Bit - happy :-) (dont help me to scan the communication between 2 devices - but thats a other story) now i want get back to te default starting Point - try something otheren-USTelligent Community 13Thu, 22 Apr 2021 13:00:01 GMThttps://devzone.nordicsemi.com/thread/306339?ContentTypeID=1Thu, 22 Apr 2021 13:00:01 GMT137ad170-7792-4731-bb38-c0d22fbe4515:3cb2ea86-962c-4149-8cf1-0f9717ba75faVidar Berg<p>Hello,</p> <p>Please try the following:</p> <p>1. Put the dongle into DFU mode by pressing the reset button while the USB connected. The red LED should start to blink when it&#39;s in DFU mode.</p> <p><img src="https://devzone.nordicsemi.com/resized-image/__size/320x240/__key/communityserver-discussions-components-files/4/pastedimage1619096421417v1.png" alt=" " /></p> <p>2. Open the Bluetooth Low Energy app in nRF connect for desktop, select the Dongle from the dropdown, then click &quot;Yes&quot; when prompted to program the device.</p> <p><img src="https://devzone.nordicsemi.com/resized-image/__size/320x240/__key/communityserver-discussions-components-files/4/pastedimage1619096504589v2.png" alt=" " /></p> <p>3. Dongle should be back to its factory state at this point.</p><div style="clear:both;"></div>