Hi, I have an iPhone 2G. I am not now in the U.S. at the moment and I am using a chip from the phone company of the country I live in. When I wanted to use my iPhone with a chip in this country, I had to pwn my iPhone in order to be able to use a chip from this country. If I update, will I be able to pwn my phone, or the update will not allow the use of any foreign chips, (or non U.S. chips) ?? Thank you very much, very kind regards, igmolinav.