How do I re-enable USB debugging?
In the Cruz Tablets
Go to Settings > Applications > Development > USB debugging (select to enable).
In the Cruz Reader
From the Home screen, open the app panel, go to Dev Tools, and launch Terminal Emulator.
Type the line below (it is Case Sensitive), if not typed perfectly, it will not work.
am start -a android.intent.action.MAIN -n com.android.settings/.DevelopmentSettings
Then press the Enter key in the lower right corner of the onscreen keyboard.
This will open a menu option to re-enable USB debugging (select to enable).
Note: There are a total of 5 spaces in the command line above, they are highlighted in yellow to make them easier to see and to aid you in the proper inputting of the command.