1. David Makandwe's Avatar
    Guys kindly help me, I want to Downngrrade the OS for my BB 9900 but i don't know how to do it. I recently installed the latest OS 7.1.0.923 but I still think 714 is far much better but I don't know how to load it back on my BB. Thanks in advance.
    06-07-13 09:36 AM
  2. Legal Eagle's Avatar
    Uninstall .923 from your PC.

    Download and install .714, delete vendor.xml files, backup device and then run app loader to install the .714 and restore as usual.
    deezy87 likes this.
    06-07-13 09:57 AM
  3. BullGuard8's Avatar
    Exactly,

    after you have deleted the vendor.xml files, when loading the OS using apploader.exe, it will tell you that the current operating system is newer if you wanna leave it as it is or downgrade (2nd option), choose the 2nd option then and proceed as normal

    OS 7.1.0.714 is the best in my experience as well it gave me the best reception / radio signal
    06-07-13 11:31 AM
  4. David Makandwe's Avatar
    When I use apploader I don't get any suggestion to downgrade the OS but the apploader only reads or detects applications on my phone and only gives me the option to remove application. I don't know what could be thhe problem.
    06-08-13 12:11 AM
  5. David Makandwe's Avatar
    Uninstall .923 from your PC.

    Download and install .714, delete vendor.xml files, backup device and then run app loader to install the .714 and restore as usual.
    When I use apploader I don't get any suggestion to downgrade the OS but the apploader only reads or detects applications on my phone and only gives me the option to remove application. I don't know what could be thhe problem.
    06-08-13 12:12 AM
  6. deezy87's Avatar
    May I ask, why you'd like to downgrade?
    06-08-13 12:13 AM
  7. David Makandwe's Avatar
    I feel 714 is far much better than 923 in terms of battery life that's why I want to downgrade.
    06-08-13 12:23 AM
  8. ryanza's Avatar
    I find 714 to be heavy on the device battery in any BlackBerry that gets it.

    To add to what has been said, I prefer to wipe a device with BBSAK after a backup then load a new OS and then restore the backup.
    06-08-13 12:26 AM
  9. bigsee's Avatar
    When I use apploader I don't get any suggestion to downgrade the OS but the apploader only reads or detects applications on my phone and only gives me the option to remove application. I don't know what could be thhe problem.
    The advise you replied is referring to the computer not the phone itself. You need uninstall/install on your computer!
    06-08-13 02:25 AM

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