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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 rubberduck21 over 6 years ago

I confirm. After each save the clock hangs up and no longer takes a keystroke. Light shines permanently and it drains the battery

0 danieldumbrava over 6 years ago

This also started happening to me in the last days. After each workout is saved, the watch hangs, music still plays, but you have to turn it off and on again for it to become responsive again.

0 UweLehmann over 6 years ago

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

0 Former Member over 6 years ago

Same here!

0 George over 6 years ago

As a suggestion, this can sometimes be caused by a corrupted file or by the device being short of memory.

The instructions for deleting the FIT files are here support.garmin.com/.../

If that doesn't work, I would try resetting the device, which will delete a wider range of files like music and satellite data.

0 Humschti over 6 years ago in reply to George

Maybe as a workaround, but this is clearly a firmware issue!! I will try deleting the files later today

0 Humschti over 6 years ago in reply to George

I removed all fit files and restarted the watch. And i didn't get a freeze this time! Thank you George, your Workaround seems to work!

0 2806030 over 6 years ago

Same here, but it started to happen since I uploaded a custom workout to the watch 2 days ago.
Before that, I didn't have any issue and I'm sure still on 5.70. I'm not sure if there is a correlation with the issue.

0 ARGH! over 6 years ago in reply to 2806030

Interesting. Same has happened to me since I uploaded a custom route. I’m on 5.73. I don’t really want to do a reset though, unless there’s no other option...

0 zeropluszero over 6 years ago

I have had this issue ongoing with my 645M going on for months now. I am currently on 5.7 firmware.
-Typically I'll have a freeze when saving the run i've just completed. I know now to give the watch around 30 seconds without pressing any buttons and it will find some memory, and finish the saving process.

-I have had occasional hangs while pressing the lap button in workouts, which is very annoying as I use this feature a lot to take splits of my workouts.
this is when I am just running, without using a pre-programmed workout.

-I also have had hangs when using pre-programmed workouts, for example my workout might have a section that is 15seconds on, and 15 seconds off, i have had the countdown start, but then skip a couple of beeps, and then not start the lap at the right place.