How To Upgrade You BlackBerry OS
In order to upgrade your BlackBerry OS, you will first have to go to your mobile carrier’s down load page. Here are the list:
Asia Pacific
Europe
North America
South America
2. The most recent BlackBerry Desktop software is available here: http://www.blackberry.com/support/index.shtml
If your mobile carrier does not provide the lastest upgrade or a specific foreign character (esg Chinese Character), you can download it from other mobile carrier. For example you can download the CSL version to install the Chinese character and yet the OS will still be in English.
To install a OS update from a different carrier you have to delete C:Program FilesCommon FilesResearch In MotionAppLoaderVENDOR.XML first.
[...] You can search from Google with keyword “Blackberry OS [Carrier name]”. Or you may refer to here to download the official Blackberry [...]