How to get free and unlimited browsing on airtel for this month

I was browsing through a trusted forum and i saw this cheat so i decided to share it with you guys.
it works like magic, just insert your airtel sim on your phone and dail
*442#
Now switch off your phone for '6 MUNITS' and switch it on again, and change your phone date to
7 August 2017
after that send SMART To 141
and update your phone date to normal.