So, this is interesting to me, and probably the best evidence that Apple does not replace iPhones with new phones, but refurbished ones. I had my original iPhone 4 replaced because it kept over heating and shutting off (I live in Canada, no way it's because of the weather...).
Anyway, when I got home I jailbroke my phone and entered Cydia. Cydia says it has all of the SHSH Blobs saved for this iPhone from 4.0.1 up to 4.2b3. There's no way I could have saved them because I got it replaced when it was on 4.1. I'm not complaining, the phone works awesome, and looks perfect in every way. I do wonder who it was used by before though...
Anyway, when I got home I jailbroke my phone and entered Cydia. Cydia says it has all of the SHSH Blobs saved for this iPhone from 4.0.1 up to 4.2b3. There's no way I could have saved them because I got it replaced when it was on 4.1. I'm not complaining, the phone works awesome, and looks perfect in every way. I do wonder who it was used by before though...