i recently updated my iphone 8gb but the problem is when its done it says invalid simcard.i figure it has something to do with the original simcard from the iphone before?u see i lost the original sim card cuz i thought i dont need it anymore. so now im stuck at the front page with the slide for emergency screen.any chances i can restore my phone to its original state without using the original simcard??thanks in advance.your reply is very much appreciated.