HOW TO UPGRADE BLACKBERRY FIRMWARE

VISIT
http://us.blackberry.com/support/ downloads/download_sites.jsp
Choose the
correct Network Carrier on your Blackberry &
also choose the Correct Model,  Click the Next
Button to see available software for your phone..

NOTE: Make sure you know the current firmware your phone is curently runing so that you don't download a
firmware lower than your present one. To check the
firmware of your phone, go to options then about you
should be able to see it then it would be in this format
(4.5.5.124] something like that.
After you the the firmware you want to download, scroll
down and click on download then you will be asked
to fill some information's after filing click on next
again then agree to the agreement then the
download link should be available on the next page
Now Click on the Download Link on their
Site, please you must have Blackberry desktop manager on your pc
before installing after download is complete, Run and
Install the newly downloaded program. Do not
mark the option to open Desktop Manager
when finalizing the installation.  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  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 the 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.

ENJOY!!!!