I have a rooted S3 from sprint (sph-l710) and I have tried to install an update twice but it fails both times. I am on 4.1.2 build JZO54K and the only mod I have done to it is root it. What happens is I see a notification that I can install the 4.3 update and it does the normal reboot when I select it. It then shows the green robot and the installing icon. After a few minutes it will change to the green robot on it's back with the red fail icon. The red fail icon will flash for less than a second before it reboots and things are just like they were before I tried the install...still on 4.1.2. I don't know why it failed. Is there a place to find more information about this? I wouldn't mind resetting the phone completely and upgrading as long as I can save all of my user data and most of my settings. The only reason why I have it rooted is because I purchased Titanium backup pro and when I have restored using that before before, it has done a decent job. But this last time I am not sure my phone has been the same.