Fitbit Blaze users have reported issues with the device's sleep-tracking functionality. Some users have reported that their Blaze device has stopped tracking sleep altogether, while others have experienced intermittent sleep data tracking or a lack of detailed sleep stage information. These issues appear to be related to firmware updates, with some users reporting that updating their device's firmware led to the sleep-tracking issues. In some cases, restarting the device or following recommended troubleshooting steps has resolved the issue, while others have had to resort to manual sleep logging or contacting Fitbit support for a replacement device.
| Characteristics | Values |
|---|---|
| Blaze Firmware Update | 17.8.402.1 |
| Blaze Firmware Update Date | Monday |
| Blaze Firmware Update Year | 2019 |
| Blaze Sleep Tracking Issue Date | 9/9/2018 |
| Blaze Sleep Tracking Fix | Restarting the device |
| Blaze Sleep Tracking Fix | Resetting the device |
| Blaze Sleep Tracking Fix | Adding the device as new |
| Blaze Sleep Tracking Fix | Manually logging sleep |
| Blaze Sleep Tracking Fix | Calling support |
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What You'll Learn

Firmware updates
In some cases, the Blaze device may appear to be functioning correctly, but upon closer inspection, it is evident that the sleep tracking feature is not working as intended. This can be a significant cause for concern, as sleep tracking is a fundamental feature of the Blaze smart band.
It is important to note that this issue is not consistent across all devices and has been reported by multiple users at different times. While some users have found temporary solutions, such as restarting the device or manually logging sleep, these fixes are not permanent and the issue often persists.
To address this problem, Fitbit has released several firmware updates, such as version 17.8.402.1, which aimed to improve sleep tracking. However, these updates have not always resolved the issue, and some users continue to experience problems with sleep tracking even after installing the latest firmware.
It is recommended that users experiencing sleep tracking issues on their Blaze device stay up to date with the latest firmware releases from Fitbit. While this may not immediately solve the problem, it ensures that users have access to the most recent improvements and bug fixes. Additionally, users can try restarting their device, forcing a sync, or contacting Fitbit support for further assistance.
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Software issues
In the Fitbit Community forums, users have discussed potential workarounds and solutions. One user suggested that the issue could be related to the sleep sensitivity mode, as they noticed that their Blaze displayed sleep stages when set to "sensitive" mode. However, this setting was not available on all devices, indicating that the problem may lie in the software configuration or compatibility with certain hardware versions.
Another potential software-related issue could be the timing of updates and feature releases. Some users reported that their Blaze devices lacked sleep stage tracking, even though Fitbit had announced its availability for the Blaze model. This discrepancy may be due to a staggered release schedule or a delay in rolling out the feature to all users. In such cases, users were advised to keep an eye out for future software updates that would hopefully include the missing sleep stage tracking functionality.
It is worth noting that in some cases, users received replacement devices from Fitbit support, indicating that the issue may not always be resolvable through software updates or user-implemented solutions. While software issues are a significant factor in the Blaze's failure to track deep sleep, it is important to consider other potential causes, such as hardware limitations or user-specific factors, which could also contribute to the problem.
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Faulty hardware
There are several reasons why faulty hardware could be the reason your Blaze has stopped tracking deep sleep. Firstly, it could be that the hardware itself is defective or damaged in some way. This could include issues with the sensors that track your sleep, or the hardware that connects to your phone or computer to sync your data. If the sensors are not working properly, they may not be able to accurately track your sleep patterns, including deep sleep.
Another potential issue could be with the hardware's connection to the Fitbit app. If there is a problem with the hardware that facilitates this connection, it could prevent your Blaze from syncing your sleep data to the app, resulting in a lack of deep sleep tracking. This could be due to a faulty port or connector, or an internal hardware issue that affects the device's ability to transmit data.
In some cases, the hardware may be functioning correctly, but the firmware or software installed on the device could be outdated or incompatible with your phone or computer. This could lead to issues with syncing your data, including deep sleep tracking information. While this is not strictly a hardware issue, it could be related to the age or model of your Blaze hardware, which may not support the latest software updates.
Additionally, it's possible that there is an issue with the Fitbit servers or the user's internet connection. If the Blaze hardware is unable to connect to the Fitbit servers due to a server outage or internet connectivity problem, it may appear as though the deep sleep tracking has stopped functioning. This is because the data is unable to be synced and uploaded to the user's account.
Finally, in rare cases, the hardware may be functioning correctly, but there could be an issue with the user's Fitbit account or profile. If there is a problem with the user's account settings, permissions, or data storage allocation, it could prevent the Blaze from properly syncing and displaying deep sleep tracking information.
To troubleshoot these potential hardware issues, users can try restarting their Blaze device, ensuring the hardware is properly connected during syncing, checking for any visible damage to the device, and ensuring their Fitbit app and device firmware are up to date. If issues persist, contacting Fitbit support for further guidance or a potential hardware replacement may be necessary.
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Incomplete data sync
However, for others, the issue has persisted even after attempting this solution. In these cases, it is recommended to contact Fitbit support for further assistance. It is possible that the issue may be due to a defective unit or a bad software update, as suggested by one user. Therefore, it is advisable to ensure that your Blaze is running on the latest software version and to check for any available updates.
Additionally, some users have reported that their Blaze displayed sleep stages for a few days before switching back to the old readout. This could indicate that the feature was temporarily available due to a system glitch or an ongoing update process. It is important to note that Fitbit had announced the sleep stages feature for the Blaze, but it was not yet implemented at the time of these discussions.
If you are experiencing issues with your Blaze not tracking deep sleep, it is recommended to try the suggested troubleshooting steps, ensure your software is up to date, and reach out to Fitbit support for further guidance if the issue persists.
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Lack of sleep sensitivity mode
There are several reasons why a Fitbit Blaze might not be tracking deep sleep. One user reported that their Blaze stopped tracking sleep after a firmware update (version 17.8.402.1). In this case, the issue was resolved by restarting the device by pressing the back and bottom buttons simultaneously. Another user reported that their Blaze stopped tracking sleep after a software update, and they were unable to resolve the issue even after trying multiple troubleshooting steps. It is possible that the update may have introduced a bug or compatibility issue that affected the sleep tracking functionality.
In some cases, the issue may be related to the device's sleep sensitivity mode. One user reported that their Blaze displayed sleep stages ("light, deep, awake") when they put it back into "sensitive" sleep mode. However, the next morning, it switched back to the old readout on its own. This suggests that the sleep sensitivity mode may not be consistently applied or may be subject to certain conditions or limitations.
It is important to note that the sleep tracking feature on Fitbit Blaze has been a source of user queries and discussions. Some users have reported that their Blaze devices did not show sleep stages, even though Fitbit had announced that this feature would be available. In response, Fitbit Product Experts Alumni advised users to keep an eye out for software updates, as the sleep stages feature might be released in a future update. This suggests that the lack of sleep sensitivity mode or sleep stages data could be due to the device's software version or a temporary glitch.
If a Fitbit Blaze is not tracking deep sleep, users can try several troubleshooting steps. These include restarting the device, forcing a sync, manually logging sleep, and checking for software updates. If the issue persists, users can contact Fitbit support for further assistance, as they may be able to provide a replacement device or offer additional solutions.
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Frequently asked questions
This could be due to a defective unit or a bad software update. Try restarting your device by pressing the back and bottom buttons simultaneously. If this doesn't work, try restarting your device three times in a row.
Try manually logging your sleep. From the sleep menu, click on the plus sign on the top right and select "Add Sleep Log". Change the date and select the start and end times for your sleep.
You can try calling Fitbit support. They may be able to provide a better response over the phone and could potentially send you a new device if your Blaze is under warranty.
You could try waiting a few days to see if the issue resolves itself. There may have been a recent patch or update that caused the issue, and Fitbit may be working on a fix.
Sleep stages were supposed to be available for the Blaze as early as March 6, but some users have reported that they still don't have access to this feature. It could be due to a software issue, and you may need to wait for a patch fix.











































