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Use the latest version of the Sony Sound Connect app in phones app store.
Sorry, there was a problem. Please try again later.Hi Jim! If you are asking about how firmly the earbuds fit, the WF-1000XM5 are designed for a secure and stable experience. They include four different sizes of Noise Isolation Earbud Tips (including a new SS size) to ensure a perfect seal for every ear shape. These earbud tips use a unique polyurethane foam material that improves adhesion to the ear canal, preventing them from slipping during movement. For the best experience, we recommend checking out our Help Guide on how to wear the earbuds properly: https://helpguide.sony.net/mdr/2963/v1/en/contents/TP1000778771.html If you were actually referring to the firmware version (the software for the device), the latest updates can be found and installed through the Sony | Headphones Connect app on your smartphone. Thank you for considering Sony! Regards, Dominick
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