Basically I formatted my phone and lost the OS. I was running CyanogenMod 10 but I wanted to go back to stock android and then ended up formatting the phone and deleting the OS. My phone does appear to be recognised by my computer and I can add different recovery images to my phone through the terminal on my mac but I'm not sure if I can install the OS again? If I try and boot up my phone it just gets stuck on the Google logo but I can get on recovery mode. Does anyone know what to do?