[defultnoob]

I've looked everywhere even searched on here and cant seem to find a anything on how to install the custom recovery image. I have the file downloaded psfmod-0972 but i dont know how to flash.

There are a bunch of file inside the rar, I see supersonic i know thats the one that need to be flashed my question is how? i tried terminal i type su (enter) then flash_image recovery/sdcard/psfMod-supersonic-0.9.7.2.img with that bin file on the root of sdcard and i get a error saying file not found. whats the steps to just flash a recovery image?