Hi guys. I've been hearing the risks of updating and jailbreaking my iPhone 3GS to 3.1.3 so I didn't. That is until my phone broke and I got a replacement shipped to my house. It's a refurbished iPhone 3GS. I look at the model # at the back and it shows: A1303. So I'm thinking it's jailbreakable. But then I remembered that refurbs have parts replaced and stuff. So, I look at the model # in settings and I see: MC131C. Is this jailbreakable with sn0wbreeze? Thanks.