IMPORTANT NOTE: Your earbud requires firmware version v4.0.0 / v4.1.0 to work with this earbud. Please confirm your firmware before making purchase.
How to pair replacement earbud:
Place earbuds in the charging case, do NOT close the lid of the charging case. Now, hold the initialize button of the charging case for about 15 seconds or more. Release your finger within 5 seconds after the indicator (orange) on the charging case starts flashing. Pairing is now complete.