ios 4.3 - 3GS freezes after entering PIN-Code
I'm using an 3GS, before running with 4.2.1. It's a "free" iPhone.
I just upgraded to 4.3. The upgrade process run without any problems. The iPhone started normally, but after entering the pin-code, it freezes and reboots several times. After 15 min. of reboots, it's just working fine und without any problems. But even, if you switch it off and start it again, the same procedure begins. I restored it several times, but nothing helped.
iTunes 10.2.1
MacOS 10.6.6
What can I do?
Regards & Thanks
3GS, iOS 4