I'm sorry to hear that your device may have overslept. Allow me to provide some support to get your device wide awake. When completing the update, did you receive any error messages? It may be that your software was not fully installed. If you are still having issues with your device, please complete a hard reset, by visiting http://vz.to/rlYXKN
Please let us know if this is able to resolve your issue, thanks!
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I am not able to get it to turn on at all. I don't know if the software installed fully. I have tried holding the powe button and the volume button down at the same time and nothing...when I put it on the charger, it doesn't even show the light that it is plugged up. Help!!!