I tried to flash the image with 2.2. I read this ariticle https://source.tizen.org/documentation/reference/flash-device for it. 

To flash the image, I should install ‘lthor’ on linux as this article said. But I am looking for ‘lthor’ for mac. 

Where should i get it? If you have the tutorial for flashing the tizen image on mac os, please let me know. 

Thanks