After updating, test the lock key: short press (sleep/wake), long press (power menu), double press (camera/assistant). If the problem continues, the hardware button itself may be damaged — not just a driver issue.
plugging in the hardware to avoid Windows assigning a generic (incorrect) driver. Verify COM Port: Device Manager Look under Ports (COM & LPT) for "Silicon Labs CP210x" or "Daeho USB to UART". Note the COM port number (e.g., COM3). Configure App: Open the LGMV software and ensure the setting matches the one found in Device Manager. Insert Key: lgmv lock key driver upd
You should see listed without any yellow exclamation marks. Troubleshooting "Lock Key Missing" After Driver Update After updating, test the lock key: short press