GARMIN Forerunner 955 no longer tracking sleep, constant updates (27.09)

My Forerunner 955 has been constantly updating (mutliple times per day) and no longer tracks sleep or heart rate correctly. It is curtently on version 27.09. I have tried reinstalling the software and reseting the watch but the problem persists. I have seen people talking about a phantom 27.11 update, but it does not seem to exist (at least not an Europe).In short, my watch is being reduced to being capable only of showing me what time it is.

Completely unacceptable to have this type of problem with this sort of a delay regarding a solution from a company as rich and big as Garmin. I have seen forum posts about this issue dating back at least a year!

Update 12/02/2026

No reply from Garmin Service. I managed to resolve the version update issue (the watch no longer constantly updates and I do not have an asterix next to the version number). However, the watch continues to fail to track sleep and records only sporadique heart rate data during the night. I suspect that Garmin is not at all interested in fixing this issue (which was not at all an issue before this last update) as it will convince at least some of their customers that it is time to buy a new watch. I think it is hightime that I switch watch brands.