An OS leak is out, and it is for the BlackBerry Curve 8520 series. If you’re experiencing any problems with your Curve, you might want to update the OS. If you are NOT having problems, then you shouldn’t update the OS. Every device acts different with software, so be sure and think about it before you update. Before installing the new OS to your BlackBerry Curve 8520, it is important that you backup all of your data to prevent any information from getting lost. The operating system is the platform of all programs, so installing the latest OS  should enhance device  performance.
Download 5.0.0.882 Leak for the BlackBerry Curve 8520 here
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Any users who update to this OS notice anything different? Any noticeable bugs, or bug fixes? battery life?? Let us know!
Source: Driphter