sugestions on how to update my clie peg-ux50

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I bought my clie several years ago, so it is getting old. My battery lasts much less than when it was new. In order to surf the web it should last several hours. It no longer takes good pictures. Maybe the lens is dirty or scratched. I imagine that better software and applications are available now. Can anyone suggest me what I should do, provided I really like my CLIE? Thaks Javier Etcheberry