Hello, I have been trying for the past three days to to successfully jailbreak and unlock my iphone 3gs. I am having no problem jailbreaking. The issue arises when I try to downgrade from 06.15 to 5.13.04. I have followed the dev-team blog instructions over and over again and I'm getting the same result -- an "activation required" message on the iphone. After I slide to unlock, I then get the "connect to itunes" image. I do not know what I am doing wrong. Please help! Also, I am running 5.1.1 and the serial number of the phone indicates it was made sometime in 2010. Thanks.