OS 5.0.0.348 for Blackberry Curve 8520 is now available for download, following the released for The Bold 9000 and Curve 8900. There will be more OS 5.0 expected to be released soon. But, remember, this is an unofficial release and it is not alway better than the previous version. Please install at your own risk, follow the links below for more guides and tutorials.
Download OS 5.0.0.348 for BlackBerry Curve 8520
Instructions: How to Upgrade your BlackBerry’s Operating System
Instructions: How to Downgrade your BlackBerry’s Operating System
Instructions: How to reload the Operating System on a Nuked Blackberry
