24 words were provided during the Initial Setup of your Biometric Wallet and you have written them down on the recovery card. Make sure you still have the recovery card.
Unlike other products, your wallet will still remain safely intact inside the secure chip even after updating the firmware. This means that you don't need to recover your wallet every time you update the firmware as other products requires you to do.
(Keep your recovery card secured and ready just in case your Biometric Wallet is no longer accessible, possibly due to "brick"ed device or something that went wrong during the update process.)