Thank to @stroughtonsmith and @chpwn, Siri now has been perfectly ported to the iPhone 4 and iPod touch 4G! And it could successfully connet to Apple's service, that means Siri can speak beyond the iPhone 4S now! Check out the videos below...
"Have Siri connecting to Apple's servers on iPhone 4 after a hack session with @chpwn!
And we now have it working on @chpwn's iPod touch :-)
What amuses me is that I've boiled the entire Siri hack down to one line of code. (Plus a *ton* of filesystem changes)"
Steve Troughton-Smith says he will release detailed information on how the port was performed after the iPhone 4S jailbreak is released.
Thank to them all!
via iclarified and 9to5mac