1. Download and install the earbud supporting APP.
2. Ensure the earbuds are connected to the phone normally and the battery level is ≥50%.
3. Open the APP, enter the "Settings" page, and check for firmware updates.
4. Click "Update Firmware" and wait for the update to complete (usually takes 5-10 minutes).
5. Keep the earbuds connected to the phone during the update process to avoid interruption.
