I bought a Garmin Forerunner 255 watch that I want to use only with Gadgetbridge. There is an old software version on the watch and I want to update it and I don’t want to connect it with Garmin Connect or Garmin Express app?
I have looked for the possibility to do an “offline” update but have not found it. Maybe the community will help?
You’ll need to find someone sharing the gupdate.gcd file for firmware 21.22. You can drag and drop those onto the watches storage.
Alternatively, use the desktop app to install ovwr USB?
The latest version is 22.24 but I can’t find it anywhere gupdate.gcd file. As I wrote I don’t want to use the Garmin Express app.
It does not really answer OP’s question, but there are alternative OSs for consumer devices. I found one: https://wiki.asteroidos.org/index.php/Category:Watches
I know the project and keep my fingers crossed for it, but they currently support very old watch models that are not sporty.
Just curious, what features work and what do you have to miss out on by foregoing Garmin connect? On their website Garmin devices are generally listed as partially supported, and I’m not sure what that entails.
The official website is not updated particularly often so I check here https://codeberg.org/Freeyourgadget/Gadgetbridge/commits/branch/master/search?q=garmin&all=
Thanks, I’ll keep an eye on it and consider if I should give it a shot.
I’ve just spent the last week with Gadgetbridge for my Forerunner 265.
Previously I had Garmin Connect installed on a separate Android user profile with Google Play Services enabled (GrapheneOS). I would only go in there once a week or so and look at the Garmin info as it synced over.
Gadgetbridge is working pretty well - the great majority of everything I actually cared about viewing is accessible. I also have an always on BT connection for notifications and music controls which I was missing out on before.
That said, there are a few drawbacks
- Garmin presents the date better.
Gadgetbridge often uses bar charts for time-series data where Garmin uses a line chart. e.g. Stress is a series of 1px thin vertical lines with colour to indicate bands. Garmin’s single line which swaps colour is far clearer.
- GPS data is not overlaid on a map
Its easy enough to open the GPX file in an external map viewer, but you can’t see its alongside heart rate etc and the track won’t be heatmapped for speed as in Garmin.
Personally, I’m willing to live with these compromises for the privacy, certainly for another few months trial.
As it seems easy to setup a regular export of Gadgetbridge data, I might make it a coding project to implement better visualisations in Python.
Try. What do you have to lose?
