updated 12:55 am EDT, Sat October 15, 2011
Siri brute forced into iPhone 4 firmware
Well-known mobile developer Steve Troughton-Smith successfully hacked the Siri voice command system into the original iPhone 4 late Friday. He has brute forced both the Siri code and the necessary changes to Springboard (the home screen) with both running properly. The voice commands both work with the natural language question-and-answer system as well as dictation.
The primary obstacle is the loss of graphics acceleration. With the phone having to run video through software, the interface is noticeably more sluggish than on the stock model.
Apple hasn't explained why Siri is exclusive to the iPhone 4S and may have lost arguments that the older iPhone 4 can't run the network-based command system. Some speculation has argued that may be a question of setting expectations rather than absolute requirements. While Siri might not require the dual-core A5, the extra power could help improve the overall responsiveness. [via 9to5]