Stop Samsung to update Android 8.0 Oreo is something we've heard several times in the past. This time, the South Korean company stopped the update for the Galaxy S7 and the Galaxy S7 Edge due to some problems discovered in the update after it was released two weeks ago.
After a limited number of cases where Galaxy S7 devices were restarted unexpectedly after upgrading to Oreo 8.0, we temporarily stopped updating. We are investigating the problem internally to ensure that the damage to the affected devices is minimized and that the update process can resume as soon as possible.
If you are experiencing random restarts, you should visit a local Samsung support center. It seems that fixing the problem requires factory data reset, so the team in the support center will do its best to restore the phone to its previous state.
There are many people in the support forums of Samsung who reported that the restarts occur in the middle of the update and stumble during the boot. So restarts do not take place from time to time - the phones will not take off even, so you need to restore the phone to the status of the factory.
