We found a Leaked version of the latest OS for BlackBerry Curve 8530,  5.0.0.463.

Follow the link bellow to download:

From MegaUpload: OS 5.0.0.463 for the BlackBerry Curve 8530

We don’t know how long the link will be up! we recommend to download asap.

FYI: Remember to always backup your phone in case something goes wrong.

Let us know how it went!