Venu 4 corrupted .fit file.

Hello,

I’m experiencing an issue with my Garmin Venu 4.

  • The activity is available on my watch but hasn’t synced to Garmin Connect.

  • During the workout, the watch worked perfectly — no lags, power loss, or disruptions — and the session was successfully saved.

  • I can open and view the activity on the watch, but it doesn’t appear in Garmin Connect.

  • I tried connecting the watch to my computer and manually uploading the activity file, but the Garmin Connect website returned an error.

  • I also synced the device via Garmin Express, but the activity still doesn’t appear.

  • Activity was tracked via mix session, only first one got saved.

I tried all of tools mentioned in forums to fix the file but I'm not able to :/ 

Could you please help me resolve this issue or advise how I can recover and upload this activity?

2025-10-21-19-22-13.zip