Two new OS versions for the BlackBerry Curve 8900 have been leaked online. The OS series is OS 4.6.1.133, and according to some people who have tried it, it works pretty well. So beside the new leaked OS of Blackberry Curve 8900, there’s also an older version of the Blackberry Curve OS available, which is OS OS 4.6.1.120. To start a new operating system install, you’ll need your BlackBerry, an Internet-connected PC, a USB cable and about an hour and half of free time—50 minutes or an hour for the upgrade process and 30 minutes or catch-up time afterwards. Mac users beware: RIM doesn’t currently offer the BlackBerry Desktop Manager software for Apple computers; however, industrious Mac owners running Parallels and who have a copy of Windows have been able to upgrade their BlackBerrys via Macs, though the process can be a bit clumsy.
Anyhow, both of these OS’ have not officially been released by RIM, therefore if you have never used a beta OS before we don’t recommend it.
Download OS 4.6.1.133 for the BlackBerry Curve 8900 >>
Instructions: How to Upgrade your BlackBerry’s Operating System >>


