Im guessing this may be one of your first OS upgrades, but I promise, it is fairly easy, and you have little to worry about as things generally go smooth. The whole process can range between 20-40 minutes so be patient.
PHOTOS BELOW
1.) Your going to want to make sure you have Desktop Manager installed on your computer. Insert the install disc, or go to BlackBerry.com to get the file. Install the software and go ahead and run Desktop Manager when complete. Below is the file. If you are already cool enough to have Desktop Manager installed well start that bad boy up, we don't have all day!
BlackBerry - Desktop Software for PC
2.) Next connect your phone via usb cable and wait for Desktop Manager (DM) to find your phone, it will install all the drivers necessary and you are going to want to perform a backup of your phone to save your contacts and settings. Only chumps skip this step, so go to step 3 if you consider yourself chumpy.
After the backup, close down Desktop Manager and continue.
3.) Now download and install the OS you wish to add to your phone. Below is the link to download the OS.
https://www.blackberry.com/Downloads...47D0BED9.node2
4.) With the OS installed to your computer you will want to Navigate to:
C:\Program Files (x86)\Common Files\Research In Motion\AppLoader (if you do not have 64 bit windows the program files will not have the *x86*) Scroll down and if you see a file called vendor.xml delete it, if there is NO vendor file that is good news! So don't worry about it, you don't want to see it anyway.
Click on Loader.exe on the top of the list and it should recognize your phone, click next until you get to this screen.
If you click on details below and then modules, you will see what is currently on the phone, and then to the right, what will be updated. Click next and allow your phone to do the update.
This step usually takes a bit so be patient and DO NOT remove your phone from the PC unless you enjoy extra headaches. Once your phone turns back on your update is complete, now just one more step
5.) Lets put all your contacts back on your phone, remember that backup we made earlier! Let's do this thing. Close all other open windows and open Desktop Manager again. Now this time click the top left where it says device, and select restore, now load the backup you saved earlier and viola you are done and have successfully updated your phone and restored your settings.
Enjoy the new OS, hopes this guide helps, took like 20minutes to write up real quick.