Press and hold the middle button (crown) until the screen goes black and you see the MONTBLANC logo (about 10–15 seconds). Continue holding through any reboot cycles if needed.

Place the watch on its charger (required for safety).

The watch will show the "No command" screen (Android robot lying down with an exclamation mark).

The watch will disconnect from your phone, erase all data, and reboot to the setup screen (language selection). Method 2: Hardware Keys (If frozen, unresponsive, or forgotten PIN) Use this method if the screen is frozen, won’t turn on, or you forgot your pattern/PIN.