BlackBerry Bold 9900 users just got a nice official OS bump thanks to China Unicom. Adam @CrackBerry noticed this new OS available though we don’t have a change log. If you want the latest official OS for your device pick it up below:
Warning: This OS will NOT install on any other BlackBerry besides the one mentioned above. If you do not know how to upgrade your BlackBerry OS please start by reading this step by step guide. Don’t forget to delete the vendor.xml file located in c:program files>common files>research in motion>apploader to install it on a different carriers device. Don’t forget our usual warnings: do not download and install these updates if you don’t know what you’re doing. Incorrect procedure or just bad luck could render your BlackBerry inoperative or unstable.