I can't update the software on my Samsung Galaxy Watch4

Connect the charger to a wall socket.

Place the back of your smartwatch on the magnetic charger allowing it to click into place.

When the battery charging icon is displayed, charging is in progress.

Press and hold the Home key until your smartwatch restarts.

Slide your finger upwards starting from the bottom of the screen.

Press the settings icon.

Press Software update. If a new software version is available, it's displayed. Follow the instructions on the screen to update the smartwatch software.