1. Download and install the latest firmware onto your PC.
2. If you are running firmware from another carrier go into c:\Program Files\Common Files\Research In Motion\Apploader and delete the vendor.xml file. Also if you are using another carrier’s firmware and you are running Desktop Manager 4.7 or above disconnect your PC from the internet.
3. Open Desktop Manager > Select Application Loader > Select Update > On the update screen select Options.