Edit: After half day, my wife’s Mac started having the same problem. I have then applied the solution that I found in the Apple
Siri Voice Command Ported from iPhone 4s to iPhone 4 [Video] –
9to5Mac told us earlier that they had been working with Steven Troughton-Smith to port the iPhone 4S Siri voice command system to the iPhone 4
. They said they were able to complete the beginning steps needed to port Siri from the iPhone 4s to the iPhone 4. Siri may look complete by looking at the video and it is not far away from being that. The only problem at this moment in time Apple not accepting the requests as it appears from a iPhone 4. Do not build your hopes up from this video but , this shows you that there is no specific hardware needed and defeats peoples thought about the software needing a A5 processor.