How to update OS version of Micromax Canvas Amaze 4G?

how i update my softwere and os version on micromax canvas amaze q491


how to softwere update micromax-canvas-amaze-q491  

How to update my phone setting > about phone > system update is not available plz answer me how to update my phones

there is no update my phone was hanging many times while it's charge was 40%  if it possible to solve @ give the latest version

Go to Settings > About phone > Software update to check for updates on your phone.

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