The same developer that originally ported Siri to the iPhone 4 has created another video showing more progress. Developer Steven Troughton-Smith has been working to port Apple’s new Siri technology to older iOS devices.
In the first video, Siri was unresponsive and sluggish on the iPhone 4, mainly due to the fact that the phone’s GPU was disabled. Now the Siri port has been improved to run smoother and more fluidly on the iPhone 4.
Siri and dictation still can’t connect to Apple’s servers on the iPhone 4, so the interface and animations are all that can be currently displayed by the developer.
It’s only a matter of time before a working Siri port makes its way to older devices via the jailbreak community. Apple could also decide to open up Siri to other devices besides the iPhone 4S, but those odds are slim.