Knowing how someone does the unlock
If I was to get my hands on an unlock iphone when there wasn't a public release for an unlock is there a way to find out how the people did it? For example, before comex came out with his spirit jailbreak and unlock for 3.1.3, I knew someone selling unlock 3GS iphones at 3.1.3. These were brand new with matching serials so I know they weren't refurbished. They also had the new bootrom. This group of guys always seem to have an unlock when nobody publicly has it and way before any release. It isn't the hardware unlock method either. Is there anyone here that can actually find out how they did it by taking a look at one of their phones?