Follow the steps -:
• Keep a minimum balance of rs 2 in your airtel sim
• Now goto one.airtel.in from your default phone browser
• Activate the youtube video trail pack of 100 mb [ first try skipping this step, if not works then do this step ]
• Now need to goto Wynk Music and click on free download
when your downloads reach 50-60% cancel it
• Now goto wynk movies and click free download.
same as above step, when the download reaches 50-60% disconnect it
• Yo You are successfully unblocked your airtel sim.