Hi,

Download and install Blackberry Desktop Manager.  Then, download the upgrade from Verizon Wireless and install the upgrade file.  When the upgrade file is done installing on your computer, then attach your Blackberry device and open Blackberry Desktop Manager.  Follow the instructions and prompts to upgrade your device's software.  Make sure you back up your device before you upgrade your device's software.  This is important or you might lose your contacts and other personal files.

Doc