TF3D should start automatic. If no user action is recognized after 30 seconds S2U2 will appear, and after another minute (aprox) device goes to standby, after standby (give it some seconds in standby) TF3D will restart. On power key device goes to standby, too.

Changes:

-device will stay in standby
-Device will not longer got stuck when restart TF3D
-Little clean up
-improved stability
-ETA today

http://forum.xda-developers.com/showthread.php?t=450556