1- Open Volcano setup.
2- Install USB driver for Micromax A67.
3- In box interface, select One key root, USB mode and in Dropdown select ADB root.
4- Click on run.
5- Process will result in rooting first.
6- Mobile will get restart.
7- Again in Dropdown select reset Gmail.
8- Click on run.
9- it will reset the Gmail.
10- Mobile will Switch on and message will appear Mobile is Upgrading.
11- Pattern has been reset without getting data loss.