• You have to disconnect from the device for service advertisements to actually update.
    Just tested your above snippet, and the new service shows up in nRF Connect, and does have a value of "Hello".
    Get nRF Connect for your phone, makes quick checks really easy.

  • @AkosLukacs Thanks for the reply! It seems I am on the right lines then - however

    'I have to disconnect from the device for the service advertisements to actually update'

    Maybe there is something wrong in my fundamental understanding - I have saved the watch app into the device storage, I run the app on the watch with no devices connected, then attempt to connect to the watch. By disconnect do you mean completely unpair and then repair? I'll give that a try!

    I'll definitely take your advice and get that app, it sounds like it could be really useful.

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