I have been trying to unlock a 2G iphone to use on Tmobile. I have read many threads and tried using iclarified instructions. The phone has 3.1.3 and I am following the instructions at Iclarified based on that. I am trying to use redsn0w, but when I get down to step 6 it says the firmware is not verified. Here where I am confused. At the beginning of the tutorial, it had me download 4 files. Within the tutorial it only references those files, but if you look closely at the picture the IPSW files are different. The 1st restore uses 3.1.3 but step 5 refers to a 3.1.2 software (only in the picture, there is no written reference to it). Am I supposed to download a different software for this step or use the same 3.1.3 that I downloaded per the instructions? If I am supposed to use the same, why doesn't it recognize it? It worked for the restore? If I am supposed to use the 3.1.2 why didn't the mention to download it in the instructions? Thanks in advance for your help.