Open Fitbit app > tap Today > Devices > your device > Update and follow instructions. Firmware updates become available only if you turn on all-day sync and let the Fitbit app run in the background.

Alternatively, go to Today > profile icon > device icon > Sync Now. This article explains how to manually sync your Fitbit ...

Restart > clean connections > use a different charger > replace the cable > bring the phone closer. Check Bluetooth connection > disconnect other Bluetooth devices > restart Fitbit app > check for ...

To change the time on a Fitbit, you'll need to adjust the time zone setting for your device on the Fitbit mobile app or desktop website.