Some Blogs that in theirs not knowledge gives you suggestions as to install Siri Port in your iPhone 4 iPods Touch 4, they don’t know that this software steals you the personal data!
Finally, a good news for all those who are desperately waiting for the successfully working Siri port on iPhone 4 (GSM + CDMA) and iPod Touch 4G. Today we let you know on how to install fully functional Siri on iPhone 4 and iPod Touch 4G. Unfortunately, iPad 2, 1 is not supported to this guide.
here for further details