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Care and maintenance
HD 458BT | 29
Installing firmware updates
Firmware updates can be downloaded free of charge from the Inter-
net using the Sennheiser Smart Control app. Sennheiser recom-
mends to always install the latest firmware version to ensure the
best performance of your product.
▷ Connect the headphones to your smartphone and start the Smart
Control app (> 15).
▷ The app provides information on available firmware updates and
guides you through the installation process.
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