I ' m not sure honestly . The 10 . 2 full release is coming up soon , as some said sometime in December , so you might just want to ride 10 . 2 beta out . I ' m not entirely positive if going back up to the beta would help though if you do , I would update , and then apply the backup that is the most recent before you downgraded also , you might be able to wait it out , and possibly the official 10 . 2 release could fix it not sure there is a possibility that backing up now and restoring to that backup would work , but I wouldn ' t count on it . What I would do if this personally happened to me doesn ' t work for most people . But I , in this position , would just start fresh , as most of my data is , in one way or another , easily retrievable .