Which zigbee cc2531 flasher?

Hi all

Would someone please be kind and tell me which flasher I need for a cc2531 zigbee usb stick so I can flash appropriate firmware for openhab?

I do know i need the cc2531 stick such as


But what about flasher?
Would this work?


If not, How is this?


It doesn’t look complete anyway.

Anything else I should think about?