Install Siri on All iOS 5 Devices with Spire
Posted on December 26, 2011 by eli courey
A new Cydia app called Spire installs Siri on a jailbroken iPhone 4, iPhone 3GS iPod touch and iPad running iOS 5. Unlike other Siri hacks, Spire allows users to specify the proxy server, so there are no privacy issues. Also, Siri files are downloaded directly from Apple, so there are no piracy issues.
Spire was created by chpwn, check out his website for installation instructions.