Alright, back from the Apple store, got mine replaced due to wifi issues. I got a 3.1.2fw w/ 05.11.07 for a bb. If I'm reading the s/n correctly: 5K952.... I've got a week 52 of 2009. This would mean I'm going to have issues (as in needing a tethered jb), right?
Wrong! (so far

) I ran blackra1n on a whim, and it went through just fine, got Cydia installed and everything. I downloaded a few jb apps that would require a respring and they worked like a charm. I figured it may still think it's tethered, so I unplugged it from my pc and downloaded another respring-required app. Still no problem, weird.
I even turned the phone off and turned it back on again, no hookup to the pc required. Can anyone tell me what the heck is going on here? Are the refurb serial numbers different or in different places on refurbs as opposed to new ones?