corrupted fit file fenix 8

Hi! I did a trail run today, but the activity did not synced. I have tried manual upload as well, and some fit file repairers as well, but still not succeed. Could anyone help me what is the problem? I included a link of the fit file below.

Kind regards, Adam

Trail run with problems

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seilogramp 13 days ago +2 verified

FIT File Viewer will fix the activity so that Garmin Connect will accept it. However, your activity is having the issue described here - New bug in FIT files: empty File ID and no Record messages

Much of…

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+1 seilogramp 13 days ago

FIT File Viewer will fix the activity so that Garmin Connect will accept it. However, your activity is having the issue described here - New bug in FIT files: empty File ID and no Record messages

Much of the data, such as GPS records will be missing.

2025-10-05-09-37-13_fixed.fit

Suggest contacting Garmin Support directly to report the issue.

0 erdodi.adi 10 days ago in reply to seilogramp

Thank you! It's really frustrating, since this was my last long run before my attempt to run my longest ever trail run. It's annoying that I have to carry a backup device just to make sure I have the activity recorded. I'm reporting this to the support team immediately.