- Back up your data in such a way that you can restore it to a new ROM version. This probably means you want to synchronize contacts and calendar with Outlook on your desktop, and create copies of the files you need.
- Download and install the SpecialEditionROM. It will unlock your phone as a part of the cold-boot procedure.
- Synchronize using ActiveSync to get your contacts and calender data back, and copy back the files.