https://devzone.nordicsemi.com/f/nordic-q-a/20597/secure-ble-dfu-sequence-diagramsI&#39;m looking at the sequence diagrams for the secure bootloader, and I&#39;m confused about the response procedure opcode for Packet Receipt Notifications (PRN). From the diagram, the packet is identical to the CRC calculation response. Is this an erroren-USTelligent Community 13Mon, 20 Mar 2017 10:01:13 GMThttps://devzone.nordicsemi.com/thread/80265?ContentTypeID=1Mon, 20 Mar 2017 10:01:13 GMT137ad170-7792-4731-bb38-c0d22fbe4515:5df54ed4-306a-43f0-9f5d-3424c6d99b19Aleksander Nowakowski<p>Both PRN packet and CRC Calc response have the same data (crc and offset) and are handled almost the same way. I guess it was designed like this to simplify the code of the bootloader. If they were different one could ask why are they different if they have the same meaning :)</p><div style="clear:both;"></div>