Jailbreak and Unlock iPhone 3GS iOS 4.3.3
Im new to this (i) world, and totally confused on how to unlock a new iPhone 3GS for my friend. I actually need to only unlock it, but I guess for that jailbreak is also necessary as I read in most places. The Phone is 3GS running iOS 4.3.3 (8J2) with 8GB and baseband version 05.16.02.. I have access only to a windows PC and need to unlock it, jailbreak only if its vital for the unlock. Have iTunes 10.3.1.55 installed. Also will I risk anything on the unlock, could somebody help me with the softwares and procedure please? Thanks a lot!!