In reply to bouldery bits:
I also have an elderly Garmin. It has been observed that a fair number of Garmin problems are linked to the legacy software that's part of the whole Garmin set-up - I'm not sure how true that is, but it would seem that a wholesale update of Garmin is a non-trivial exercise.
My Garmin is not without its faults - mostly an inability to navigate. It sulks and won't do turn indications for more than half an hour. The pink worm remains on the map, but if you try and boot it out of its nav fail mode, it just drinks a whole load of battery and sulks again. Bless it. xxxxing thing.
PS - it still links to Strava via Garmin connect and a bit of electric string, but I usually just do Strava on my phone
Post edited at 10:26