1. jman's Avatar
    i installed several leaks and OS for 9900.
    I want to go back to At&t orginal OS.
    How do you do this?
    do I just download the OS from AT&T site?
    Then how do i install on the phone?
    oli323 likes this.
    11-29-11 01:56 PM
  2. freethisberrydotcom's Avatar
    Uninstall the leaks that are installed on your pc ..

    go here: BlackBerry - BlackBerry Desktop and Device Software Download Sites

    and download the AT&T one for the 9900 ..

    Open up loader.exe via c:/program files/ common files/research in motion/app loader

    delete the xml file and run loader.exe

    plug in your device and follow the steps.

    Hope that helps
    11-29-11 02:04 PM
  3. pcgizmo#IM's Avatar
    Just run Desktop Manager. Go into Device > Update my device > View other versions and all the carrier released OS's should be there. Prior builds will say (downgrade)
    Last edited by pcgizmo; 11-29-11 at 02:09 PM.
    11-29-11 02:05 PM