Information On The Built-In Rechargeable Battery; Installing Firmware Updates - Sennheiser CX Important Safety Instructions Manual

Care and maintenance of the earbuds/charging case
Information on the built-in rechargeable
battery
Sennheiser ensures and guarantees that the rechargeable batteries
perform at their optimum upon purchase of the product. If, upon pur-
chase or within the warranty period, you suspect that a rechargeable
battery is obviously defective or if a charging error/battery error is
displayed (> 8), stop using the product, disconnect it from the power
supply system and contact your Sennheiser partner. Your Sennhe-
iser partner will coordinate the repair/replacement with you.
Do not return a product with a defective battery to your dealer or
Sennheiser partner unless requested to do so.
To find a Sennheiser partner in your country, search at
www.sennheiser.com/service-support.

Installing firmware updates

Firmware updates can be downloaded free of charge from the Inter-
net using the Sennheiser Smart Control app.
▷
Connect your earbuds to your smartphone and start the Smart
Control app (> 19).
▷
The app provides information on available firmware updates and
guides you through the installation process.
▷
Make sure that the batteries are fully charged before updating (>
14). Avoid connecting or disconnecting the USB power supply
during the update process.
▷
The earbuds must be in the charging case and must not be
removed during the update process. Close the lid of the charging
case.
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