This method does not erase all data but removes "new" indicators, recent notifications, and temporary session data.

After reboot, check if all "new" badges or first-time setup screens have disappeared.

No. Firmware updates remain. Only user data and notification flags are removed.

Solution: Power off the device for 2 minutes, then retry. If still unresponsive, check for physical damage or contact support.

Go to Settings → Apps → Show system apps
For each suspicious preinstalled app (games, demo tools, trial apps):