If you bought it in India. It will work on all the networks. If not, then updating wont solve the issue. Better wait on the firmware you already are on.Whats with the "f" on this forum. Looks so weird.
His saying " trying a lame way to get the iPhone working for Airtel in India " made me think whether he has the factory unlocked version or not.
Didn't know its an airtel related issue.
I have Factory Unlocked Version And Iphone was Working Fine with Docomo.. But when I change it to Airtel Boom No OutGoing Calls and Sms.. And Airtel People are helpless asUsual So I tried this New Special Update for Sim Related Issue.. And Bingo Everything Is Working Fine till now..