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I just did it about an hour ago using redsn0w 0.3, worked perfectly. Only thing I noticed was my speaker seemed to stop working, but plugging headphones in and then unplugging them fixed that right up.
 
Definitely do it. I did it from the day the program was released! I mean, I used a windows program called QuickFreedom. It's awesome.
 
Yeah, I've done it too. Jailbroke it in March using QuickFreedom (when it first launched). Now, I have no problems, except for an occasional lockdown.

It may freeze then go to sleep. And if I try to unlock it, it doesn't open. A quick connect to iTunes always fixes that.
 
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