How do I upgrade Micromax A72 Android version from 2.3.6 to 4.2.6?

[AC Question]

how to upgrade micromax A72 android version from 2.3.6 to 4.2.6

am having mobile micromax canvas a72. pls tel me how to upgrade it from 2.3.6 to 4.2.6

 

[swapan paul]

Re: how to upgrade micromax A72 android version from 2.3.6 to 4.2.6

am having mobile micromax canvas a72. pls tel me how to upgrade it from 2.3.6 to 4.2.6