I just got my new TB and followed the exact correct steps.
So I updated my dongle to 2.5 and restarted as (dongle update complete! The system will now restart)
and after the restart I get this on the screen
The system was not turned off properly the last time it was used.
Turn off the system in either of the following ways to help avoid data loss or corruption, or damage to the system.
*Select [Users]> [Turn Off System] on the screen.
*Touch the power button on the front of this system until the system beeps (for 2seconds).
And nothing happens the firmware stays 3.55 no update
please some one help me with this.