Okay so i just bought a iphone 3g off my friend it worked fine and then all of a sudden when I tried to turn it on last night it was stuck on the apple logo. I did not get a chance to even jailbreak it, she never did either, and I am pretty sure that the phone is on 3.1.3. So what do I do? Do I restore it to 4.1 because from my understanding I can't just restore it to 3.1.3 because I don't have any shsh blobs. Also I am using T-mobile so I need to jailbreak and unlock the phone so I can use it. I had tried to jailbreak before using jailbreakme.com but it did not work so I just turned it off putting it off until 4.1 jailbreak unlock and jailbreak came out. Well now I guess I have to upgrade directly to 4.1 without any 3.1.3 blobs. When I do so it will upgrade my baseband right? I have no idea if it is the old bootrom or new. Will it matter if my baseband is upgraded? Will it effect my ability to unlock?