Hi all,
I have a Garmin Forerunner 165. One of my activities saved correctly on the watch and still shows in the watch history, but it will not sync or upload to Garmin Connect. All my other activities sync fine — only this one fails.
Activity details:
- Date/time: June 22, 2026, ~05:27
- Type: Cardio
- Duration: 40:52
- Distance: 3.60 km
- Original file: 2026-06-22-05-27-58.fit (213 KB)
What I've already tried:
- Manual sync from the watch and pull-to-refresh in the Connect app
- Restarting the watch and the phone
- Unpairing and re-pairing the watch
- Connecting the watch to a PC and manually importing the .fit via Garmin Connect web → I get "An error occurred with your upload. Please try again."
- fitfiletools.com Corrupt Time Fixer → the output shrank from 213 KB to 157 KB and still won't upload
The lap/split data in this activity is important to me, so I'd really like a repair that preserves the laps, splits, and time-in-zone data if possible — rather than a fix that strips those fields.
I've attached the original .fit file (zipped). Could someone please help repair it so it uploads to Garmin Connect with the lap data intact?
Thank you very much!
