I have an iPhone 3GS (old bootrom) that was purchased in the US with a 2 year contract from AT&T. The problem is that I am in a foreign country for the next couple of months and I depend on an unlock. I wanted to upgrade to iOS 4.1 using Snowbreeze, so I wouldn't have to update my baseband. My question is, in snowbreeze should I check the "activate my iPhone" box?, if I don't then what happens? NOTE: I still have the original AT&T SIM card with me. Thanks in Advance!