Best software to jailbreak 3GS?

Chiuy said:

Are there tutorials of where to update to 6.0.1.?
I looked at Google but many articles redirect back to websites where they say I have to buy the software?

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Intell said:

Redsn0w. iOS 5.X is an untethered jailbreak and depending on which version of the 3Gs you have, iOS 6+ will also be an untethered jailbreak.

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designs216 said:

Better than Absinthe?

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Chiuy said:

I want to do a complete clean restore on a 3GS which is version 4.2.1 and want to update to at least iOS5.
What is the best software to do that?
I heard RedSn0w? But last time I remember correctly, if I used RedSn0w and if I shut off my iPhone, I won't be able to boot it up again until I use a computer. I want to be able to restart my iPhone without going back to my computer.

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