1. If the firmware download fails, switch networks and try downloading again in an environment with good network connectivity.

2. If the firmware installation fails, please restart your phone and try uninstalling and reinstalling the soundcore app.

3. Try upgrading using another phone.

If the above solutions do not resolve your issue, please upload the log through the soundcore app and provide your phone model, operating system version, and device serial number (SN). Then, contact soundcore Technical Support for further assistance.