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Garmin Forerunner 255 – GPS Issues

DoDo
1 month ago

Hi everyone,

I’ve been having trouble with my Forerunner 255’s GPS for the past week. It suddenly stopped finding satellites when starting outdoor activities like running or walking. Until then, it worked perfectly.

I tried restarting the watch, syncing with Garmin Express and Garmin Connect to refresh satellite data. Oddly enough, it worked yesterday and I completed a run. But later in the day, it failed again.

During today’s workout the signal even dropped mid‑activity and hasn’t come back since. Sob

Now, it just keeps searching without locking onto GPS – even after 30 minutes under clear sky. It’s very unreliable and I can’t figure out any pattern. I’ve tried everything except a factory reset.

Anyone else had similar issues? I'm on software version 23.20. Would really appreciate any suggestions!

  • 0 10 days ago

    I have the same issue. Few weeks now.

    No GPS signal. It can search for hour. I also tried everyhting, from adding the watch, restart it etc.  Obviously I don't want to factory reset it.

    I found out, the corresponding "ephermesis" file in "RemoteSW" folder on the watch, is not updated by Garmin Connect app. It is clearly an issue with the Garmin Connect app.

    support.garmin.com/.../

    A workaround is, to connect the watch with cable to PC, with Garmin Express tool. Then the ephermesis file is updated. And GPS is aquired immediately as it should be.

    Of course this is really annoying. As GPS acquisition time, and GPS accuracy drop, the older the file is.

    Basically you cannot really on it after 24 hours. where your woraround might loose GPS in the middle of woraround.

    And after 48hours you get no GPS again. And you have to connect your watch per cable to PC and Garmin connect.

    Please do something with it!!!