https://devzone.nordicsemi.com/f/nordic-q-a/9994/invalid-softdevice-no-value-for-clenr0-specified-sniffer-firmwareHi Nordic, I am using PCA10031 nRF51422 dongle and trying to program ble-sniffer_nRF51822_1.0.1_1111_Sniffer.hex for sniffing. I have downloaded the ble-sniffer_win_1.0.1 zip file and found the mentioned above firmware sniffer_nRF51822_1.0.1_1111_Snifferen-USTelligent Community 13Fri, 30 Oct 2015 03:40:28 GMThttps://devzone.nordicsemi.com/thread/37052?ContentTypeID=1Fri, 30 Oct 2015 03:40:28 GMT137ad170-7792-4731-bb38-c0d22fbe4515:1d36995e-40fc-4ffa-af6f-ac87c2b46c98lakshman<p>Hi Nordic, Found the solution. I tried to program previous version ble-sniffer_win_0.9.7.zip. I had the same issue then again I tried using ble-sniffer_win_1.0.1 zip.Now I am able to program it. One more thing, we can use ble-sniffer_win_1.0.1_1111_Sniffer.exe to reprogram the PCA10031 nRF51422 dongle.</p> <p>Thanks and Regards Lakshman,PMP,PMI-RMP</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/37051?ContentTypeID=1Fri, 30 Oct 2015 02:32:39 GMT137ad170-7792-4731-bb38-c0d22fbe4515:0d8462e3-f8f4-4cf3-84d7-9d5aec34922aRK<p>how old is your version of nRFgo studio?</p><div style="clear:both;"></div>