Asus Eee Pad Transformer TF101 - Manual (Page 5)

ASUS Eee Pad 
9. The firmware update process takes about 10 minutes to complete. Tap
OK to continue.
10. Your Eee Pad automatically reboots and starts firmware update.
11. After rebooting your Eee Pad, you shall see the update success message
popped up if the system has been updated successfully. Tap OK to close
the message.