This is the package that will enable Siri on iOS 5.1.1 untethered. 

You can install it on our repo at apt.tekwik.com

Recent Changes:

•v1.0.2 – Dictation enabled on all devices.

•v1.0.1 – PLIST files included.

•v1.0.0 – Inital Release

Known Bugs:

•Upon install completion, Cydia does not prompt for a reboot.

•Issues enabling Siri on the iPad 2 WiFi + 3G (CDMA and GSM)

•No compatibility with the iPad 3rd Generation