HTC has released Windows Mobile 6.1 Professional upgrades for its HTC TyTN II and AT&T Tilt.
For the AT&T Tilt, ROM version 3.57.502.2 WWE also includes HTC Home, video share calling, threaded SMS, Microsoft Voice Command, OneNote Mobile, and more.
The HTC TyTN II version also comes with threaded SMS, updates to address a number of bugs and improve overall display performance and device responsiveness.
Note: The update will replace the current ROM image and will erase partnership and all user data and programs on your device. Be sure to back everything up before you start.