Which firmware versions of Apple’s iPhone can this product unlock?
Software doesn’t unlock most of the recent basebands. It is also very risky to unlock an iPhone using software.
you can unlock an iPhone safer and easier using remote unlocking service. You can get the remote unlocking service for an iPhone from http://www.mobileunlocksolutions.com/apple/rs16wp8/ at affordable cost with free step by step unlocking instructions. This method of unlocking an iPhone doesn’t require a jailbreak too. Good luck mate.