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For the Ectaco "jetBook" and "jetBook Lite" as well as the Aluratek "Libra Pro":
To enter the diagnostics screen:
Reset the device. (Use a paperclip to press the button in the hole
on the back)
Then hold down three buttons.
They are: "on/off" "zoom" and "menu".
When you see the Logo screen let go of "on.off".
Keep holding the "zoom" and "menu" keys until you see a 16 item screen.
It's tricky, so it may take a couple of tries.
Then you can reflash the NOR Memory and restore the device to factory defaults.
After that is done reset the device, again.
Luck;
Ken
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