messed up partition and no os

hiee I have micromax canvas turbo that is rooted .. I tried to partition with minipartition tool but messed up something . after that it was not showing my internal sd memory nut just the phone memory . I tried to put a fresh ram and I wiped up the data and landed with "no os " message ... now I cannot flash rom through twrp recovery as mount option not helping .and adb shell too not working up.. .. can I recover my phone back or is it just a brick now..please help