i had a 1.0.2 unlocked iphone. ysterday i upgrade it to 1.1.1 sucessfully but couldn't unlock it with anysim. so i tried to downgrade it and then upgrade to 1.1.1 again. i did it but still couldnt unlock it. since i restored my iphone bricked and i can not restore it again and even can not activate it with iNdependence.
now i have 1.0.2 firmware and can not active my iphone. how can i unbrick it now
sorry for bad english

You can´t upgrade an unlocked 1.0.2 iPhone to 1.1.1 unless you virginized it prior to the upgrade.

Visit [Only registered and activated users can see links] for more information on the virginization process.