Ladies & Gentlemen.......... i4Siri

Since the release of the iPhone 4S, many of older devices owners' were devastated for not being able to get
Siri the talented personal assistant on their devices.
The guys in the jailbreak community made gigantic efforts to port it to older devices, but most of the methods used successfully were questionable as it was illegal since they have to use apple servers or apple's copyrighted material and of course must run on jailbroken devices.
Until an iPhone guru named Chpwn along with his fellow gurus Plantbeing & Ryan Petrich managed to port it with a different method, legal this time which doesn't infringe any copyrights or so, through their masterpiece Spire but with some obstacles with proxies detailed here on his blog.


Just until March 10 2012 when a project named i4Siri dedicated to provide free Siri workaround for unsupported older devices, in other words, solve the problems that Chpwn faced with Spire & Siri proxies.
i4Siri simply works with Spire providing their own free proxy eliminating most of the issues faced before for setting up a proxy, certificates, etc....
It currently supports iPhone 4, iPod Touch 4G & iPhone 3GS along with iPad 1& iPad 2 (with some extra effort).
It can run on any of the above jailbroken devices with Spire installed, on firmwares 5.0, 5.01 or 5.1!


Their current free version supports:

Time,Timer,Notes, Smart Siri, www search, Dictation, Phone calls, Jokes, Alarms, Weather, Where am I?, Reminder (not fully working), Wolfram Alpha and Location searches.
So will have to wait and see their Premium ( paid ) version, which is reasonable as the waiting list for such a service is unimaginable so traffic on their servers will be catastrophic, so must be limited somehow.
A great job so far from some really dedicated people.
 
Full tutorial here on their blog.

Sources:
http://www.apple.com/
http://blog.chpwn.com/
http://i4siri.com/