This may occur if the instructions for the download are not followed carefully. Visit the downloads section of the model support page, and review the information provided in the Important Notice and Before you upgrade sections.
Our recommended tips
Before installing the update again, make sure that:
- Your mobile device and the earbud headphones are fully charged.
- Check the supplied help guide for charging details. Manuals are posted on your model support page.
- The Automatic Power Off setting in the Sony | Headphones Connect app is set to Do not turn off.
- Your mobile device has a strong Wi-Fi® signal.
- If the Wi-Fi signal is weak, use the smartphone / mobile cellular signal to enable the download of the update.