Sense reboot loop

[ROG335]

My battery drained. I have charged the battery, but the device only cycles and does not complete startup..  About 5 seconds black screen, followed by about 5 seconds startup logo. 

Moderator edit: edited title to clarity.

[CrisVillaFitbit · Accepted solution]

Hello and welcome to the Fitbit Community, @ROG335.

Thanks for letting me know about this situation in regards to your Charge 5 having this reboot loop.

I recommend you to do the following, please:

- In the Fitbit app, touch your profile picture, touch your Fitbit device and click 'Sync Now'. This will help you synchronize it.
- Restart your Charge 5 by following the steps here.
- After this, change the clock face of your Charge 5. In the Fitbit app, you can access the image of your profile and the image of your Fitbit device, touch the gallery and the screen and click on the clock face, preferably one of Fitbit and install.

[ROG335]

This was not helpful. My sense continues to only cycle through the reboot cycle. Any other suggestions

[Repentandbsaved]

The problem is not a syncing problem it’s a reboot loop that you can’t get out of. You can’t do a factory reset. The device does nothing more than switch from a black screen to a logo and back to black over and over again. I can’t afford to buy a new Fitbit device again. How do we fix the issue?

[hudder]

This exact same thing just happened to me this morning, even down to the exercise app not working, and now I am also stuck in the same logo on/logo off reboot loop. Based on your comments sounds like my watch might be toast.

[Repentandbsaved]

My sense just went into the reboot loop two days ago. I followed the instructions given on how to fix it but it only worked after I disconnected the sense from the app, my phone from the app, and deleted the app off my phone. After about 16 hours I kept pressing the button on the sense until I got the red x. Then I reloaded the app onto my phone and was able to connect the sense to the app. Works great again. But I don’t think I’ll ever trust another Fitbit device after this. 

[Shadygrove]

This did not work for me. It continues to cycle. The watch worked normally to record sleep last night, but would not respond to the exercise app. I was able to enter Settings and chose Shut Down. After that it entered the logo/blank loop and responds to nothing. Can’t shut off or factory reset.

[Repentandbsaved]

I couldn’t either until the next night. I let the battery die, then charged
it over night, it was the second night I held the button down until I felt
the slight vibration, let go and held it down again until the logo
disappeared, let go and held it down again until I felt the slight
vibration. That’s when I got the red x. After that I loaded the app on my
phone again and proceeded with setup. I don’t know if deleting the app
helped or not.

[Shadygrove]

Thanks, it does loos like a battery drain is the only way to shut it down.
I also made the app cut the Bluetooth connection.

I wonder if the problems being posted this week are related to the firmware
update?

Appreciate your help, you seem to be the only one who met with success!

[Repentandbsaved]

Try deleting the app for a day then go through the steps again. Might just be coincidence that it worked for me. I did find an off brand on Amazon that does almost everything the Sense does for $35.00. Even if it only lasts 1 year it’s still cheaper than a Fitbit that only lasts for 2 years.
Sent from my iPhone

[Shadygrove]

I got the red x after over 24 hours. So that’s different. However it won’t sync with the phone— I can’t re-establish the Bluetooth connection. Maybe it is necessary to delete the app. I think I’ll lose all my data though! 

Does anyone think this might be due to the September 2024 firmware update? My student has the same model though and hers is fine, but it’s also newer. 

[Repentandbsaved]

I didn’t lose my data after deleting the app. I can still scroll back through the days and get my info. I didn’t know there was an update recently. 

[Shadygrove]

So, turned out I have a Sense not a Sense2. Insert snarky remark here! 

Anyhow Repend2bsaved, once the red X appeared, which took at most 24 hours after starting the logo/black screen loop, the watch apparently WAS discoverable. I texted with a customer service rep and he straightened me out on the model. Then I was able to sync. I did NOT need to delete the app, only to break the Bluetooth connection. I didn’t need to fully discharge the watch either. So for me the red x was actually a good sign. Good luck everyone!