Apple disables Siri Ports (Spire) on iPhones that aren’t 4Ss… Take a look at the Video Below:
What Apple did is adding a “SetActivationToken” to stop Spire working g properly.
Jailbreak Devs try to bypass this issue:
As read on Redmondpie:
As we’ve gratefully become accustomed to, though, the jailbreak masterminds have created a small fix to circumvent the issue – belittling Apple’s attempts. If your use of Spire has been purged by the Cupertino outfit, you can quickly and easily get it up and running once again. Simply to delete“com.apple.assistant.plist” using iFile as pointed out by iDownloadBlog (if you don’t have it, you really ought to), or your favorite desktop-based SSH utility such as DiskAid or iFunbox.
Here is a Video Demo: