(Read, "How to Reload the Operating System on a Nuked Black Berry," if you ever find yourself with a bricked 'Berry.If you do decide to install unofficial software and it's from a carrier that isn't your own, you should be sure to ditch the software's vendor XML file before beginning installation.I also noticed that the color of my jazzy new Crack Berry launcher changed from orange to cyan…

To start a new operating system install, you'll need your Black Berry, 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 Black Berry 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 Black Berrys via Macs, though the process can be a bit clumsy.

Your OS version will be listed as a series of numbers after a lowercase V (v4.2.2.184) on the first screen.

You can also employ the Help Me screen shortcut to determine your current OS version by hitting ALT, SHIFT and the letter H.

To obtain the latest operating system for your Black Berry device, first check your wireless carrier's website.

This is the best way to get official RIM OS software.Save the latest BBOS onto your Windows-powered computer If you decide to download and install an unofficial version of the Black Berry OS, you should beware that you're doing so at your own risk.Beta operating systems are not officially released for good reason: They're often full of bugs and could potentially void your warranty or worse, render your Black Berry unusable.You can visit Crackberry.com's OS4.5 Beta forum for discussion and help should you run into issues.Next you should ensure that your PC is running the latest version of the Black Berry Desktop Manager, which is v4.5.To do so, open your PC's Program Files App Loader and then delete the Vendor file, which is in XML format.