I've got the same problem, after trying to use (f-word) dr.Phone to recover deleted files. The phone got stuck on download screen. I had to force a restart, and it got stuck on SAMSUNG logo (and started to heat). The only way to make it work again was a master reset. But now the "unauthorized actions have been detected" won't go away and phone status is not "official" anymore, so it won't download system updates. The security center suggests restart to undo whatever action which may have caused it. The problem is: when I follow that suggestion, the phone comes back to the same stucking on SAMSUNG logo, than I have to master reset it again. Can I hate that f-word dr.Phone more? Do you have any idea of how to make it work again?
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