@Preyansh Welcome to the Fitbit Community! I hope you're doing well! Sorry to hear that you can't update you Charge 2. Are you trying to update its firmware or just sync its data to your account? Which troubleshooting steps have you tried? Which phone are you using? Is it compatible? You can try going to your phone's bluetooth settings and remove all devices listed there. Restart your phone and restart your device. After this try syncing them. Also, if you are using an Android device, check that your app has the necessary permissions (settings > apps > Fitbit > permissions) and make sure bluetooth and location services (GPS) are on. After this retry the firmware update if this is the case.
Let me know how it goes!
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