There have been reports that users who have Siri installed on non-iPhone 4S devices who claims that it no longer works. Upon further investigation, it seems that the cause of this problem is a certain “SetActivationToken” property list file which disables attempts to communicate with Siri’s servers.
Not all is lost though as there are reports of non-iPhone 4S users claiming that simply deleting the com.apple.assistant.plist file from the jailbroken iOS device’s var/mobile/Library/Preferences/ folder fixes the issue. It seems rather straightforward and simple, and while we don’t really have a chance to try that out ourselves, we’d love to hear from our readers who are experiencing such issues and if the solution worked for them.