Help the dev team for the software unlock
When reading the FAQ posted by iphonesimfree it came to me that you definitely need to support the dev team to create a software unlock. I wrote a post earlier about the A17 trace and where it connects to on the pcb.
What I'm guessing the iphonesimfree people are doing is simply forcing the bit that enables the A17 trace through software. This software will be locked and will only work for this firmware. I believe they are using the reversing that Geo and his crew did. The problem is, without having an open documented system of how this unlock works, if the firmware is updated, you may have a locked phone again. You would most likely have to pay to get it unlocked again. Another issue is that if they are strictly using the information that Geo and his crew gathered they may not even have the capability of creating an unlock for the new firmware, unless Geo's crew reverses the newer firmware.
What is needed is to continue to document exactly what has been done with the Hardware hack. The reversing needs to be understood so it can be done in the future with firmware updates. The bit that enables the A17 trace must be found. With this information it would be nearly easy to create a software unlock and maintain it throughout firmware updates.
I hope this all makes some sense here. The point is to support the dev teams efforts, donate to them, keep the information about the iphone free and open so that everyone can keep an unlocked phone in the future :D