I thought I was smart in waiting for the "2.1's" (both Apple's and then PwnageTool) before attempting to unlock my 1st-gen iPhone. I get the 1600 unknown error when iTunes 7.7 attempts to restore my custom ipsw, which was built to unlock (going T-Mobile) and jailbreak. I've deleted all the noise I used have here. Long story short, I wanna know what firmware version my recently obtained 1st-gen is running. Then I may be able to plan the right route to 2.1-and-unlocked.