Follow this guide carefully:

Upgrading Procedure for an Official OS release is as follows:

1. Download the OS and install it on your PC. (Make sure you have already removed any older OSes you have installed on your PC by going to Add / Remove Programs in Control Panel)

2. Delete the vendor.xml file (located in C:\Program Files\Common Files\Research In Motion\AppLoader)

3. Backup your 3rd party applications ( optional recommended step )

4. Connect your BlackBerry to your PC and right click on a file named Loader (located in the same place where you found the vendor.xml > C:\Program Files\Common Files\Research In Motion\AppLoader\Loader.exe) and select '' Run As Administrator ''

5. Follow the prompts and make sure you select the languages and applications you wish to be installed.
The Loader will backup and restore your data by default.


Still Having Issues !!?
I would recommend using BBSAK to Upgrade, so

- Uninstall the OS(s) you already have installed on your PC
- Delete the folder (research in motion) in ( c: \program files\common files\research in motion )
- Restart your PC

Thanks for the guide. I still unable to upgrade to OS 5 though. However, I tried downloading OS 4.6 and updated my device. The DM is able to detect the new update. So my problem now is that my DM is able to detect OS4.6 but not OS 5. I am using Bold 9000 btw. Any solution for this? Thanks in advance.

You cant do it at Desktop Manager our Telco OS are slow, you need to download and follow my guide above to update...

I tried using BBSAK to upgrade, can detect my device and able to load the OS installed in the PC but unable to update to OS 5. Only OS 4.6 can be updated. Therefore, I pressed the 'Add' button in the application loader to upload and when I choose the .alx files, it says 'This application is not compatible with your device and cannot be loaded'.

Remember to delete the Vendor.xml files. If still can't then uninstalled Desktop Manager and reinstalled again. Suspect the loader driver are missing that why can't detect. Which OS Windows you are using now?

Thanks, sorry for late revert. Just download it and good to go. Now can show Chinese words.

Nah its okay, enjoy your new OS...

I did not see the Vendor.xml file. I checked online, it says that if I have BBSAK in my computer, it will auto-delete the vendor file. I reinstalled my DM and restarted my computer. It still says the same thing when I tried to update using the application loader or BBSAK. I am using Vista.

Vendor.xml is hereC:\Program Files\Common Files\Research In Motion\AppLoader

If you check online they said auto delete then you can proceed for upgrade...

I'd already upgrade my OS and Apploader also stated "Your device's software has been updated successfully' but the screen still in white.is it the screen problem?

You didnt delete your vendor.xml before installing that why it is white screen...

i did delete the vendor.xml.i just take out a battery and leave it for 10 minute.after that,turn it on and voila 


This post has been edited by caterpiez: Jan 23 2011, 12:49 PM

ENJOY your new OS then...

it happen again.i turned off so i can change the sim then the screen become white again when i turn it on.what should i do?

Something wrong with your OS, I suggest you to wipe and re-install again...

i'd already tried for three times today.still the same problem when i turn it off for put my sim card

Then it is a hardware prob, still under warranty?? If yes then send it to them or else you can send it for me to diagnostics and quotation for you...

how do i send to u? do u have a shop?

Nope I don't own shop. SOHO, PM your contact if you willing to pass it to me...

dickson wanna ask something about bbsak after i whipe.. the i click the load os.. but it says no os detect please install os... but i already install it in my pc... can help me with it...