Okay I have a 3GS on 3.12 with the old bootrom jailbroken and I never saved my SHSH on Saurik's server, but from what I found on the internet I can update/jailbreak to 3.13 and keep my 5.11.07 baseband using Sn0wbreeze 3.1.3 and then unlock it by downloading Blacksn0w RC2 Final from Cydia. Does this sound good or anyone use this exact method with success? I need to make sure it is unlocked before selling it, so I can get max profit/people wanting to buy it when I sell it.