This post is older than 2 years and might not be relevant anymore
More Info: Consider searching for newer posts

BLE sniffer crashes after I click on the executable after 3 secs.

After I click on the executable the command line keeps going for 3 mins and then crashes.

@maravapalli(priya): Which version of the JLink OB firmware is on your nRF51 Dongle? You should use v5.10n, which can be downloaded here. You also need to use Wireshark v1.10.x, here is the link to the newest compatible version, i.e. v1.10.14.

In order to downgrade the JLink OB FW on your nRF51 dongle youu'll need to follow the steps below

1. Start JLink.exe with the nRF51 DK/Dongle connected to your computer
2. Enter the following command, exec invalidatefw , to invalidate the J-Link Firmware. This will promt you to upgrade the firmware, press “Yes”
3. Navigate to C:\Program Files (x86)\SEGGER\JLink_V510n, open the commandline in this folder and enter the following nrfjprog command
                nrfjprog --jdll JLinkARM.dll --readcode delete_me.hex
4. You are then promted to update the firmware again, press “Yes”. 
5. The nRF51 DK/Dongle is now using the Segger J-Link v5.10n firmware. If you use nrfjprog afterwards you must not upgrade the J-Link OB firmware if you are promted, i.e. press “No”. Otherwise you have to repeat the steps above.