- Keep the earbuds in the charging case with the case open.

- Ensure the earbuds have over 20% charge.

- Do not use the earbuds during the process.

- If the update fails, try again.

- If possible, try the upgrade with another device.

- Avoid updating the firmware in areas with potential interference, such as dense Wi-Fi networks or cell phone towers. Try updating again in a different location.

If you encounter any other issues or your issue has not been resolved, please contact us for further assistance.