ALL THESE TRICKS ARE WORKING @ ZERO BALANCE, DON'T TRY THEM WITH HIGH BALANCE OR YOU WILL LOST YOUR MONEY
1. Tricks working with airtelfun.com access point (you can try airtellive.com or airtel wap.com if airtelfun.com not works for you)
FreeOpenvpn
1. download FreeopenVPN http://swupdate.openvpn.net/community/releases/openvpn-2.1.4-install.exe
2. download FreeopenVPN config http://www.freeopenvpn.com/download/freeopenvpn.zip
3. Extract freeopenvpn config files to C:\Program Files\OpenVPN\config\freeopenvpn\
4. Connect with airtelfun.com access point
5. in taskbar click right click on openvpn gui and click on proxy setting
6. click on manual configuration, click HTTP proxy, write 100.1.200.99 in address and 80 in port and click ok
7. now again right click on openvpn gui and click connect
8. enjoy free gprs
Screen shots