OTA update now boot loop
a while back I had a friend root my phone, he recently unrooted it and brought me back to stock. Tonight I received an OTA update and clicked ok. it stated to update and then rebooted into the "Samsung" screen with white lettering, but it stays there and the screen flickers.
If I try to boot into recovery it asks if I want to download a custom OS.
Does this mean it wasn't fully unrooted (we thought he took all the steps to unroot)? is there anything I can do? If I bring the phone into verizon will they know if has been rooted and will they even care?