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Specifications
Cause 1 of 5: There is not enough power on the battery
If the battery on your Apple Watch doesn't have enough power, the software can't be updated.
Solution: Charge the battery to at least 50 percent.
Charge the battery
Connect the charger to a wall socket.
Place the back of your Apple Watch on the magnetic charger allowing it to click into place.
When the battery charging icon is displayed, the battery is charging.
Or select...
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