Here's where I stand...
 

I just got a mint iPhone 3GS 8gb. Model: MC640LL Ver. 4.2.1 Firmware: 05.15.04 Problem is I just found out it has the new boot rom. I wana jailbreak it...is a tethered jailbreak my only option here? :-( If so...what version of redsn0w should i get? It seems there are several for my iOS....

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