I have an iPhone with 1.0.2 firmware. It has been unlocked to be used on a non AT&T network. Recently I virginized my phone to upgrade to 1.1.1. After restoring 1.0.2, I downloaded independence 1.1.2a and when I tried to open it gave an error about the iTunes version I had. So I downloaded iTunes 7.4. After that iNdependence ran and I clicked Activate and pointed to where I stored the 1.0.2 firmware. After some time iNdependence quit and would not run until I take the phone off the cradle. As for the phone, I had to restart it and I get the yellow triangle. I managed to restore the firmware, but once I run iNdependence, the same thing again.

Please help me in this matter.
Thanks