uhhh the last time i told someone about using software to enter DFU mode they kinda messed up something, this might be the same method that ibrickr used

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iPhone 3GS - 3.1.2 T-Mobile
Computers:
iMac10,1
OSX SnowLeopard 10.6.2
Windows Xp Pirate Edition

MacBook5,2
OSX SnowLeopard 10.6.2
Windows Xp

iPad1,1 - 1.0 or 4.0????
Gathering money and waiting for release