Micromax A74 stock rom Official file

How to flash-

step-1 Download your stock Rom on your computer.

step-2 Rename to file ( update.zip ).

step-3 Place in to flash file on your sd card.

step-4 Flash it through the recovery mode.

Important note-

Take a backup your personal data before flashing or installing the firmware on your phone.As this helps you to recovery the personal data whenever any thing wrong happen.

Download 

Link 1

Micromax_A74_LWDEB07_2013-08-01

Link 2

Micromax_A74_LWDEB07_2014-03-19