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Firmware Updates
We occasionally make free feature enhancements and product improvements available through firmware
updates. We recommend keeping FB504 & FB505 up to date.
Updating FB504 & FB505 can take an hour or longer and may be demanding on the battery. For this
reason, we recommend plugging your watch into the charger before starting the update.
When a firmware update is available you’ll see a notification in the Fitbit app prompting you to update.
When the update starts, a progress bar appears on FB504 & FB505 and in the Fitbit app until the update is
complete. For best results, make sure your watch is charged and can connect to your Wi-Fi network.
Keep your watch and phone or computer close to each other during the update process.
If you have trouble updating your watch, see help.fitbit.com.
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