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Tips & Tricks Blackberry 9: How do I upgrade & downgrade the OS on my Blackberry?

Posted by freeappsblackberry on December 11, 2009

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How do I upgrade & downgrade the OS on my Blackberry?

Upgrade Phase:
====================

1.Download and install the latest version of Desktop Manager.

2.Download the new OS you want and put it to the pc.

3.Open Desktop Manager and do a complete back up of your current device.

4.Delete the vendor.xml file located in c:\program files\research in motion\apploader

5.Plug in Blackberry and open Desktop Manager.

6.Select Application Loader.

7.You’ll be prompted to upgrade.

Downgrade Phase:
====================

How do I downgrade the OS on my Blackberry?

1.Delete the newer OS from your PC by going to Control Panel>Add/Remove Programs.

2.Then download an install the old version of the os.

3.Locate and delete the file named “vendor.xml”

4.When that’s done, simply plug in your device , open Desktop Manager and run Application Loader. The loader will downgrade the OS.

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