Issue installing application on Garmin Forerunner 955

Hello

I would like to ask why I am unable to install my application on my Garmin Forerunner 955.

With my previous device, the Forerunner 235, I was able to connect the watch to my computer and simply drag the application into the “data” folder.

Is there a simple or recommended method to install the application on the Forerunner 955?

Thank you in advance for your support.

Kind regards

  • I've started over with a new project in VS Code

    Error: 'Signature check failed on file: Prova955'
    Time: 2026-01-29T13:30:24Z
    Part-Number: 006-B4024-00
    Firmware-Version: '27.09'
    Language-Code: ita

  • Thanks a lot for the help
    I couldn't have done it without you guys

    I've updated the SDK to 8.4 (the latest version), as all the previous ones were failing.
    I created the project directly in VS Code, and the default app was immediately recognized and executed by the watch.
    Now, I just need to port my application over to the new APIs.

    Thanks so much