Just in case you missed a few earlier reports, the jailbreaking crowd found it quite hard to make Siri available on older iDevices since the feature has to establish a connection with Apple's servers. It was the release of a revised version of iOS 5.0.1 that allowed jailbreakers access to the files of Siri. You can guess what happened next. Spire, the Siri porting tool, arrived for all jailbroken iDevices which run iOS 5. The new update that Apple has released disables this tool. The update brings a new 'SetActivationToken' plist file which prevents Spire from establishing a successful connection with the servers. So, that's it. Goodbye to Siri on iDevices other than 4S.