04-24-2009, 10:55 AM
Join Date: Apr 2009
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No, you don't need to re-install any third party apps. Practically, you do nothing, because the OS loader program first offers you to back-up your device with all the info, which you'd better do.
After the new OS gets completely installed, the program automatically restores the data from the back-up with all your settings, contacts, messages and 3rd party applications.