Important notes

There are a few key items that you must understand before you update your phone:

        - After you install a preview update, you may void any warranty from your mobile operator and OEM.
        - A preview update only includes the Microsoft portion of the update; mobile operator and OEM driver updates will be available when the official update for your phone is available.
        - You cannot revert or return to a prior operating system release version after you have updated your phone to a preview update. We will move you forward to a "released state," but we cannot take you back to a prior "released state."

thanks.. gonna hard reset my phone.. live lock screen beta is causing laggy.. soft reset didn't do the job.. do you have any other solution be4 i hard reset my phone?