Note: To update your PlayBook. Go to, Options... Software Updates... and select Check Updates. Once prompted to update, select Update. A good tip is to leave your device plugged into a power source.
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There are some ways to backup android phone contacts.
Sync to gmail is a common way.
Take a look at this article: KB13003-"JVM 513" error appears on the BlackBerry smartphone
You can also try: KB02141-Reset a BlackBerry