Flash system.img Mtk Droid Tools Create folder

Hey people i have a problem,i made a backup from mtk droid tools and only creates me a folder with system content but its not in .img format.
i try to make a repack but when im try flash my created.img , but in sp flashtools freezes at 76%, i dont have any cwm , and i cant enter recovery mode so anyone of you can repack img to me? If yes i´m gonna upload my backup
THANK YOU