This discussion has been locked.
You can no longer post new replies to this discussion. If you have a question you can start a new discussion

New bug in FIT files: empty File ID and no Record messages

At www.fitfileviewer.com, I received many similar corrupted FIT files in the past weeks. I have not seen this type of corruption before, so I assume it is a bug in a recent software update on some devices. Typical for this corruption is:

  • There is a file_id messages, but all values are invalid
  • Many messages are missing, most notably the record messages, but also event, device_info etc.. Summary messages, like activity, session and lap are there. 
  • In several cases, but not always, many messages are duplicates, e.g. there are two identical activity messages, each lap and session appears twice.

FIT File Viewer can now fix these files, i.e. make it possible to import them in Garmin Connect, but of course it cannot restore the missing data.

I have seen this happening on FR 255, 955 and 965, and also in these threads:

  • Today it happened to me again in my fr965. 3 months passed since this thread was opened and we didn't hear anything from Garmin. They haven't even acknowledged the bug, not to talk about any attempt to fix it. I really hope it'll be fixed in the next quarterly firmware update, though I start to doubt it.

  • Garmin support’s latest solution is to replace the replacement FR965.  They have no solution options other than troubleshoot, reset and replace the unit.  I suggested replacing my 965 with a model that does not have this problem, or give me a discount on one that doesn’t have the problem (970?), otherwise I will be forced to go to another brand.  Of course that doesn’t fit their script.  I’ve been a loyal Garmin user for about 20 years and spent over $10,000 on Garmin.  If Garmin doesn’t care about customer loyalty then I will definitely shop around.

  • I just had it today on my Enduro 3. I've seen it for the first time, the activity was a running DSW

  • happened to my quatix 7 pro v23.18

    had to use the fit reader site (God bless you man!) 

    i hope it's fixed in next firmware!

    I cleaned up the garmin \ activity folder (with a backup), for just in case.

  • I doubt it'll be fixed. That would at least need Garmin to acknowledge that this is a software bug instead of sending users refurbished replacements

  • So happy: No errors with the Marathon recordingJapanese goblin

  • Got this again on my vivoactive 6 on a cycling activity. Very intermittent.

  • This is getting very annoying to a point where my watch seems unusable as it is a best guess to if it works and gets a working activity file or not. Especially when folloiwing a training plan it screws the plan big time. 

    Huge thanks to Harry from Fit file viewer to at least have a basic activity stored even though a lot of important data can not be recovered. 

    Even more i can not point down any circumstances where it will happen or when it will work. Very intermittent as oithers stated. At Garmin: Please provide a fix for your customers as experience is lacking extremely due to this.

    FR255 Music 

  • Here is the garmin statement about FIT files
    https://support.garmin.com/id-ID/?faq=j3epr66mmJ0V26Yq0SO6IA

    "While there is no way to guarantee file corruption will not occur,"
    "here are several third-party fit file correction programs on the web that may help to correct a corrupted file. However, there is no 100% guarantee that this will correct the file. Garmin does not provide any programs for correcting corrupted fit files, but you can search the web using the search terms “fit file fixer” or “fix fit file”. Please be advised that the use of any third-party tool is at your own risk."

    Interesting statments, cannot find similar on apple or samsung websites.

  • I guess they don't need unsupported 3rd party websites to fix their fit files...