The current OS for the sgs3 is android 4.1.1 JB. I wanna make my own rom but i need the system.img.ext4, cache.img.ext4, boot.img to begin because I am using android kitchen because I am a beginner. Where can I download these parts or where can I download the OS? I dont want a custom rom. I need the actual rom being used my samsung on my phone. Everytime I try searching for it the results are always custom roms so I can never find it. :'( :'( :'(