UPDATE YOUR BLACKBERRY FIRMWARE MANUALLY

If you have a Blackberry device with the option for firmware update, but for some reason you are unable to update via the regular process {Over the Air}, here is how to go about it Manually.
Thanks to Mr Yomi Adegboye.
1. Visit Here, Choose the correct Network Carrier on your Blackberry & also choose the Correct Model, > Click the Next Button
2. Now Click on the Download Link on their Site, Run and Install the newly downloaded program.
3. Do not mark the option to open Desktop Manager when finalizing the installation.
4. After Installation, Go to My Computer > Open this Path C: > Program Files/Common Files/Research In Motion/AppLoader and Locate & delete the File
Vendor.xml
5. Connect BlackBerry to PC via USB
6. Now Open the Desktop Manager
You should be prompted for the update at this point. (If not, select “Update” in desktop manager) and you’ll get the prompt for the update. When presented with a new menu, select “View other Versions”, and pick the appropriate firmware version installed on your PC (local installation).


Follow the OnScreen Step from there & your Device Firmware will be Successfully Updated.
Precaution:- Please backup your Blackberry device using the Desktop Manager before trying to Update your Phone Firmware.