For those ave problems with last firmware you can try with this New one... R800XXU1CSE1
To update with netOdin see here how to do it
0. This process will factory reset your Watch, so make sure you've backed up everything you need!
1. Hold down the Home button for 6-10 seconds until the message " Rebooting ... "
R800XXU1CSE1_Tizen_3File_Multi CSC (OXA)
R800XXU1CSD7_Tizen_3File_Multi CSC (OXA)
R800XXU1CSD6_Tizen_3File_Multi CSC (OXA)
Sent from my SM-G975F using XDA-Developers Legacy app