[Help] how to downgrade Micromax Canvas Spark...

Helo to all
I am new to this forum and newbie also in the android section
Can anyone help me to downgrade my mobile(Micromax Canvas Spark) lolipop to KitKat.
Because i am unable to use donkey guard in my phone.
-----Please help me by providing me the custom rom 4.4.4 For Micromax Canvas Spark-----