How to reset a Sony Bravia Android TV

Since the website does not mention it clearly: Turn it off. Remove the power Hold Volume Down and Power on the right side of the device. (not on the remote) Turn the power back on while holding the buttons. Watch if the notification LED turns green. Let go of the buttons.

Custom ringtones, alarms, notification sounds on Android 8.x+

Copy-paste your ogg/mp3/wav(?) file to: /sdcard/Notifications for notification sounds. /sdcard/Alarms for alarm sounds. /sdcard/Ringtones for ringtones. If they then do not show up in your System > Sound > Notifications file picker, move those folders to /sdcard/DCIM/Media instead. So /sdcard/DCIM/Media/Notifications for notification sounds. /sdcard/DCIM/Media/Alarms for alarm sounds. /sdcard/DCIM/Media/Ringtones for ringtones. If they still do not show up, reboot your phone. …