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645M freezes after saving Workout (FW 5.90)

My 645M freezes after every workout just after saving it. Spotify continues to play, but the watch is completely locked. The workout however is saved correctly and can be synced after killing the watch and turning it back on.

Be careful with 5.90!!!

Top Replies

rubberduck21 over 6 years ago +12

I confirm. After each save the clock hangs up and no longer takes a keystroke. Light shines permanently and it drains the battery
UweLehmann over 6 years ago +7

I have the same issue with the no music version (FW 5.90). clock hangs up after saving an activity, light shines permanently and drains the battery
Former Member over 6 years ago in reply to agcp +6

And same here. After every activity saving, clock freeze and light is on. Restart helps, but its very frustrating remember to do that every time. Update 5.9 sucks and this bug should repair very fastly…

All Replies

0 jetlag2 over 6 years ago in reply to Former Member

Changing language did not work for me. FR 645 still freezing when saving workouts.

0 danieldumbrava over 6 years ago

Mine did this only 3 times, when I posted some time ago, after a restart it didn't do it again in the last month or so.

0 pietero over 6 years ago in reply to danieldumbrava

I have experienced this maybe only three times or so since the release of 6.20, so it actually doesn't bother me in the least.

If it does happen I restart the watch and life goes on.

0 SJWarren777 over 6 years ago in reply to pietero

Wait until you miss a meeting because the time on your $500 watch is wrong. That bothers me plenty.

0 ares952 over 6 years ago

Well, I got 2 complete freezes like this. But only in the case, the watch finds my lactate threshold. Otherwise it does not freeze after the activity is saved.

0 Former Member over 6 years ago

Je confirme la montre se bloque après enregistrement obligé de l'éteindre complètement et de la rallumer , l'activité est bien enregistré , la version du logiciel est bien à jour 6.20 , je viens d'effacer toutes les activités comme conseillé sur le forum j'espère que ça sera en ordre ??

0 Former Member over 6 years ago

This is still happening on my 645. It's a known issue and somewhat amazing that this is something that has not been resolved yet.

A watch this expensive should not be broken by a previous update and then fail to be corrected. I should not have to restart my watch over 50% of the time after completing a run of any type.

0 2806030 over 6 years ago in reply to George

I solved the issue by deleting all the activites from the watch. It haven't happened yet since then.

0 jurijturnsek over 5 years ago

I have also been having this issue intermittently for a few months now. I will delete .fit files, but this should be fixed with a FW update already.

0 jetlag2 over 5 years ago in reply to jurijturnsek

Beta software that should fix the issue is available since yesterday.

https://forums.garmin.com/sports-fitness/running-multisport/f/forerunner-645-645-m/204250/forerunner-645-series-beta-software-version-6-36-beta-activity-saving-issue